Exploratory Data Analysis (EDA): Difference between revisions

From InfoVis:Wiki
Jump to navigation Jump to search
m Reverted edit of WatHdm, changed back to last version by Iwolf
WatHdm (talk | contribs)
mNo edit summary
Line 1: Line 1:
{{Definition|'''Exploratory data analysis (EDA)''' was introduced by [[Tukey, John|John Tukey]] as an approach to analyze data when there is only a low level of knowledge about its cause system as well as ''contextual'' information. EDA aims at letting the data itself influence the process of suggesting hypotheses instead of only using it to evaluate given ''(a priori)'' hypotheses.<br>Explorative - opposed to Confirmatory - Data Analysis is like detective work looking for patterns, analomies or in general new insights and is usually done via graphical representations of the underlying data-set.}}
[http://tat-ooin.ifrance.com/resources/articles/film-gioco.htm film gioco di donna] [http://kalian42.ifrance.com/text/directory/videogiochi-gamecube/ videogiochi gamecube] [http://jdawsona.ifrance.com/data/chattanooga/ chattanooga] [http://akmokanzen.ifrance.com/images/small/haiduc-dragostea.htm haiduc dragostea di tei] [http://tizolaa.ifrance.com/web/sandrinha-nua/ sandrinha nua] [http://lovereceier.ifrance.com/lib/sborra-calda.htm sborra calda tra le dita] [http://toofarfrommaybe.ifrance.com/view/new/cesareragazzi/ cesareragazzi] [http://speedofsoun.ifrance.com/text/directory/ed-io.htm ed io tra di voi] [http://tat-ooin.ifrance.com/resources/articles/siti-di.htm siti di pompini] [http://jdawsona.ifrance.com/data/felicity-huffman/ felicity huffman] [http://lordsander.ifrance.com/topic/masterizzatore-dvd.htm masterizzatore dvd esterno per pc] [http://lordsander.ifrance.com/topic/wonderful-world.htm wonderful world lyrics] [http://jdawsona.ifrance.com/data/wmpr/ wmpr] [http://highbulp.ifrance.com/images/small/danuna/ danuna] [http://yeeden.ifrance.com/img/styles/sinudyne/ sinudyne 29] [http://demurediablo.ifrance.com/library/html/the-voyeur/ the voyeur] [http://demurediablo.ifrance.com/library/html/cellulare-spia/ cellulare spia] [http://lovereceier.ifrance.com/lib/email-certificata.htm email certificata] [http://kalian42.ifrance.com/text/directory/google-fa/ google fa] [http://akmokanzen.ifrance.com/images/small/date-per.htm date per provini film firenze] [http://igaros.ifrance.com/lib/pegperego-pramette/ peg-perego pramette] [http://kalian42.ifrance.com/text/directory/una-donna/ una donna tra due mondi] [http://toofarfrommaybe.ifrance.com/view/new/la-romeria/ la romeria] [http://lovereceier.ifrance.com/lib/masakazu-katsura.htm masakazu katsura] [http://singaporepets.ifrance.com/library/html/www-piombino.htm www piombino com] [http://kalian42.ifrance.com/text/directory/emanuela-folliero/ emanuela folliero 2005] [http://tizolaa.ifrance.com/web/the-sims/ the sims su nintendo ds] [http://speedofsoun.ifrance.com/text/directory/www-glivec.htm www glivec it] [http://lovereceier.ifrance.com/lib/miss-brasile.htm miss brasile] [http://demurediablo.ifrance.com/library/html/ragazzi-senza/ ragazzi senza disagio devianza e] [http://oiyaoi.ifrance.com/images/small/gerhard-winkler/ gerhard winkler] [http://tizolaa.ifrance.com/web/disegni-futurama/ disegni futurama] [http://speedofsoun.ifrance.com/text/directory/exilim-pro.htm exilim pro ex-p700] [http://oiyaoi.ifrance.com/images/small/jimmi-fontana/ jimmi fontana] [http://voltia.ifrance.com/content/view/tecnocasa-appartamenti.htm tecnocasa appartamenti pavia e provinc] [http://noxuhax.ifrance.com/content/view/mari-land.htm mari land] [http://broadwaylili.ifrance.com/content/view/microgonna.htm microgonna] [http://voltia.ifrance.com/content/view/il-mistero.htm il mistero delle cinque dita] [http://yeeden.ifrance.com/img/styles/il-poliziotto/ il poliziotto] [http://akmokanzen.ifrance.com/images/small/saturno-astronautica.htm saturno (astronautica)] [http://highbulp.ifrance.com/images/small/betsy/ betsy] [http://yeeden.ifrance.com/img/styles/elaborazione-scooter/ elaborazione scooter] [http://yeeden.ifrance.com/img/styles/ddr-vdata/ ddr vdata] [http://broadwaylili.ifrance.com/content/view/one-shot.htm one shot 80 volume 2] [http://akmokanzen.ifrance.com/images/small/trick-me.htm trick me di kelis] [http://toofarfrommaybe.ifrance.com/view/new/il-segno/ il segno di robin hood] [http://demurediablo.ifrance.com/library/html/canon-mm/ canon 18-55mm] [http://toofarfrommaybe.ifrance.com/view/new/shadows-ashlee/ shadows ashlee simpson] [http://toofarfrommaybe.ifrance.com/view/new/assault-/ assault - profondo nero] [http://demurediablo.ifrance.com/library/html/video-clip/ video clip metallica] [http://voltia.ifrance.com/content/view/volare-basso.htm volare basso prezzo] [http://yeeden.ifrance.com/img/styles/age-of/ age of empire iii] [http://jdawsona.ifrance.com/data/accessori/ accessori 2020] [http://yeeden.ifrance.com/img/styles/corsair-cmx/ corsair cmx 3200xl] [http://noxuhax.ifrance.com/content/view/rita-moric.htm rita moric] [http://akmokanzen.ifrance.com/images/small/ultimo-cd.htm ultimo cd 883] [http://yeeden.ifrance.com/img/styles/mu-immortal/ mu immortal] [http://toofarfrommaybe.ifrance.com/view/new/disalberare/ disalberare] [http://lordsander.ifrance.com/topic/foto-di.htm foto di donne porno] [http://jdawsona.ifrance.com/data/vendita-vettura/ vendita vettura] [http://speedofsoun.ifrance.com/text/directory/brainwave.htm brainwave] [http://voltia.ifrance.com/content/view/bmw-z.htm bmw z3 3 2] [http://jdawsona.ifrance.com/data/laminati-abet/ laminati abet print] [http://toofarfrommaybe.ifrance.com/view/new/culi-rotti/ culi rotti gratis] [http://deviantrus.ifrance.com/topic/sms-mondiali/ sms mondiali] [http://igaros.ifrance.com/lib/xlukex/ xlukex] [http://speedofsoun.ifrance.com/text/directory/dirty-dancing.htm dirty dancing film] [http://singaporepets.ifrance.com/library/html/come-trovare.htm come trovare cazzi a roma] [http://lordsander.ifrance.com/topic/dragoste-di.htm dragoste di tei] [http://highbulp.ifrance.com/images/small/max-scopate/ max scopate] [http://lordsander.ifrance.com/topic/hp-compaq.htm hp compaq dx6100] [http://lovereceier.ifrance.com/lib/usted.htm usted] [http://broadwaylili.ifrance.com/content/view/mar-chiquita.htm mar chiquita] [http://highbulp.ifrance.com/images/small/interfaccia-bluetooth/ interfaccia bluetooth usb] [http://akmokanzen.ifrance.com/images/small/solletico.htm solletico] [http://oiyaoi.ifrance.com/images/small/love-hona/ love hona] [http://highbulp.ifrance.com/images/small/videocamera-mustek/ videocamera mustek 5000] [http://lordsander.ifrance.com/topic/finale-a.htm finale a valvole] [http://toofarfrommaybe.ifrance.com/view/new/hp-laserjet/ hp laserjet 3020 toner] [http://igaros.ifrance.com/lib/corpo-foresta/ corpo foresta] [http://highbulp.ifrance.com/images/small/lcd-/ lcd 10 pollici] [http://tat-ooin.ifrance.com/resources/articles/volantini.htm volantini] [http://deviantrus.ifrance.com/topic/circuiti-moto/ circuiti moto gp] [http://noxuhax.ifrance.com/content/view/la-guerra.htm la guerra dei nibelunghi] [http://singaporepets.ifrance.com/library/html/mi-manca.htm mi manca] [http://igaros.ifrance.com/lib/i-pod/ i pod mp3 apple] [http://demurediablo.ifrance.com/library/html/dvd-combo/ dvd combo vhs divx] [http://tat-ooin.ifrance.com/resources/articles/biglietto-visita.htm biglietto visita gratis] [http://singaporepets.ifrance.com/library/html/ibm-thinkpad.htm ibm thinkpad computers] [http://lovereceier.ifrance.com/lib/maddnes.htm maddnes] [http://igaros.ifrance.com/lib/gallerie-porno/ gallerie porno gratuite] [http://kalian42.ifrance.com/text/directory/signora-di/ signora di giorno amante di notte] [http://singaporepets.ifrance.com/library/html/nuovi-cellulari.htm nuovi cellulari nero] [http://noxuhax.ifrance.com/content/view/acryllium.htm acryllium] [http://broadwaylili.ifrance.com/content/view/nokia-.htm nokia 7610 memoria] [http://highbulp.ifrance.com/images/small/vacanza-in/ vacanza in turchia] [http://toofarfrommaybe.ifrance.com/view/new/regione-trentino/ regione trentino alto adige] [http://broadwaylili.ifrance.com/content/view/la-strada.htm la strada dei peccatori] [http://igaros.ifrance.com/lib/donna-mathews/ donna mathews] [http://noxuhax.ifrance.com/content/view/la-scarpetta.htm la scarpetta e la rosa] [http://noxuhax.ifrance.com/content/view/segnalazione-.htm segnalazione - cartelli e insegne] [http://tizolaa.ifrance.com/web/disco-freno/ disco freno accessori auto e moto] [http://jdawsona.ifrance.com/data/gps-per/ gps per palmari qtek] [http://jdawsona.ifrance.com/data/programma-dvd/ programma dvd] [http://yeeden.ifrance.com/img/styles/pelle-ducati/ pelle ducati] [http://yeeden.ifrance.com/img/styles/hard-disk/ hard disk portatile lacie 40] [http://lovereceier.ifrance.com/lib/pigro-midi.htm pigro midi pino daniele] [http://broadwaylili.ifrance.com/content/view/i-palazzi.htm i palazzi di venezia la storia della] [http://highbulp.ifrance.com/images/small/granata-seconda/ granata seconda pelle] [http://kalian42.ifrance.com/text/directory/notebook-p/ notebook p4 3 2] [http://oiyaoi.ifrance.com/images/small/albergo-cortina/ albergo cortina] [http://highbulp.ifrance.com/images/small/motorola-accessori/ motorola accessori] [http://oiyaoi.ifrance.com/images/small/great-teacher/ great teacher onizuka] [http://oiyaoi.ifrance.com/images/small/tesi-automazione/ tesi automazione] [http://speedofsoun.ifrance.com/text/directory/th.htm th 42] [http://akmokanzen.ifrance.com/images/small/honda-accord.htm honda accord 7 serie] [http://singaporepets.ifrance.com/library/html/bosley.htm bosley] [http://igaros.ifrance.com/lib/piatti-termici/ piatti termici] [http://tat-ooin.ifrance.com/resources/articles/etichette-cd.htm etichette cd dvd] [http://singaporepets.ifrance.com/library/html/regole-yo.htm regole yo gi ho] [http://broadwaylili.ifrance.com/content/view/living-in.htm living in a fantasy] [http://noxuhax.ifrance.com/content/view/foto-caccia.htm foto caccia] [http://oiyaoi.ifrance.com/images/small/meyal/ meyal] [http://toofarfrommaybe.ifrance.com/view/new/arigliano/ arigliano] [http://girlwho-is.ifrance.com/img/styles/koganei.htm koganei] [http://yeeden.ifrance.com/img/styles/usb-memory/ usb memory stick] [http://demurediablo.ifrance.com/library/html/suonerie-da/ suonerie da scaricare] [http://yeeden.ifrance.com/img/styles/inno-nationale/ inno nationale] [http://tat-ooin.ifrance.com/resources/articles/chitarra-blues.htm chitarra blues] [http://igaros.ifrance.com/lib/garut/ garut] [http://kalian42.ifrance.com/text/directory/frigoriferi-/ frigoriferi 12 volt compressore] [http://voltia.ifrance.com/content/view/fotocamera-digitale.htm fotocamera digitale canon 350 d] [http://igaros.ifrance.com/lib/taglia-tubi/ taglia tubi red] [http://toofarfrommaybe.ifrance.com/view/new/gratta-e/ gratta e vinci video] [http://singaporepets.ifrance.com/library/html/apple.htm apple 512] [http://demurediablo.ifrance.com/library/html/testo-di/ testo di if aint got you] [http://tizolaa.ifrance.com/web/foto-di/ foto di eva] [http://oiyaoi.ifrance.com/images/small/frigorifero-side/ frigorifero side by] [http://toofarfrommaybe.ifrance.com/view/new/french-kisses/ french kisses] [http://girlwho-is.ifrance.com/img/styles/hifi-lg.htm hi-fi lg] [http://igaros.ifrance.com/lib/www-mitchel/ www mitchel vieth] [http://toofarfrommaybe.ifrance.com/view/new/semisonic/ semisonic] [http://tizolaa.ifrance.com/web/rs-mmc/ rs mmc 1 8] [http://speedofsoun.ifrance.com/text/directory/vanni-rossi.htm vanni rossi] [http://deviantrus.ifrance.com/topic/bcs/ bcs 311] [http://tat-ooin.ifrance.com/resources/articles/albergo-lido.htm albergo lido di camaiore] [http://deviantrus.ifrance.com/topic/z-cellulari/ z200 cellulari sony ericsson] [http://voltia.ifrance.com/content/view/calcio-parma.htm calcio parma] [http://lovereceier.ifrance.com/lib/scheda-gprs.htm scheda gprs compact flash] [http://tat-ooin.ifrance.com/resources/articles/scribner-charles.htm scribner, charles] [http://akmokanzen.ifrance.com/images/small/ford-cayman.htm ford cayman blue] [http://yeeden.ifrance.com/img/styles/c-photo/ c86 photo] [http://toofarfrommaybe.ifrance.com/view/new/loghi-cellulare/ loghi cellulare sony] [http://singaporepets.ifrance.com/library/html/globalsat-pda.htm globalsat pda holder] [http://deviantrus.ifrance.com/topic/tunnig/ tunnig] [http://tat-ooin.ifrance.com/resources/articles/tadap.htm tadap] [http://toofarfrommaybe.ifrance.com/view/new/epson-emp/ epson emp 730] [http://kalian42.ifrance.com/text/directory/domina-coral/ domina coral bay oasis] [http://noxuhax.ifrance.com/content/view/billy-ydol.htm billy ydol] [http://highbulp.ifrance.com/images/small/foto-di/ foto di cazzi piccoli] [http://girlwho-is.ifrance.com/img/styles/chat-ragazze.htm chat ragazze porche] [http://speedofsoun.ifrance.com/text/directory/perla-nera.htm perla nera com] [http://lordsander.ifrance.com/topic/annunci-di.htm annunci di donne troie in cerca di sesso] [http://noxuhax.ifrance.com/content/view/abit-nfm.htm abit nf7-m] [http://girlwho-is.ifrance.com/img/styles/stamping-ground.htm stamping ground] [http://lovereceier.ifrance.com/lib/radio-anni.htm radio anni 30] [http://demurediablo.ifrance.com/library/html/stasera-io/ stasera io vorrei sentir la ninna nanna] [http://lovereceier.ifrance.com/lib/video-amatoriale.htm video amatoriale paris hilton] [http://highbulp.ifrance.com/images/small/terminatore-scsi/ terminatore scsi] [http://toofarfrommaybe.ifrance.com/view/new/tecnici-di/ tecnici di macchine da gioco  (regione emilia romagna)] [http://lovereceier.ifrance.com/lib/mesecina.htm mesecina] [http://demurediablo.ifrance.com/library/html/visti-asilo/ visti asilo e immigrazione] [http://lordsander.ifrance.com/topic/gomma-modding.htm gomma modding] [http://jdawsona.ifrance.com/data/frankee-nuda/ frankee nuda] [http://igaros.ifrance.com/lib/bmw-x/ bmw x5 emilia romagna] [http://deviantrus.ifrance.com/topic/www-killer/ www killer pollo] [http://highbulp.ifrance.com/images/small/tomtom-europe/ tomtom europe] [http://voltia.ifrance.com/content/view/backstage-manuela.htm backstage manuela arcuri gratis] [http://speedofsoun.ifrance.com/text/directory/nesta.htm nesta] [http://tat-ooin.ifrance.com/resources/articles/usb.htm usb 250] [http://lordsander.ifrance.com/topic/whittier-john.htm whittier, john greenleaf] [http://tat-ooin.ifrance.com/resources/articles/eurothink-cdtheque.htm eurothink cdtheque] [http://broadwaylili.ifrance.com/content/view/coppie-cercano.htm coppie cercano sigoli] [http://girlwho-is.ifrance.com/img/styles/programma-musica.htm programma musica] [http://jdawsona.ifrance.com/data/tv-/ tv 12 pollici] [http://toofarfrommaybe.ifrance.com/view/new/beat-the/ beat the meter] [http://demurediablo.ifrance.com/library/html/dream-dance/ dream dance vol 30] [http://tizolaa.ifrance.com/web/i-simboli/ i simboli cristiani primitivi] [http://singaporepets.ifrance.com/library/html/forni-micronde.htm forni micronde] [http://jdawsona.ifrance.com/data/gigolo-california/ gigolo california dream] [http://broadwaylili.ifrance.com/content/view/fuji-s.htm fuji s5500] [http://speedofsoun.ifrance.com/text/directory/rubias.htm rubias19] [http://girlwho-is.ifrance.com/img/styles/xg-flash.htm xg flash] [http://kalian42.ifrance.com/text/directory/unito/ unito] [http://yeeden.ifrance.com/img/styles/scuola-canto/ scuola canto] [http://singaporepets.ifrance.com/library/html/wifi-pci.htm wi-fi pci card] [http://igaros.ifrance.com/lib/bikkemberg-uomo/ bikkemberg uomo abbigliamento] [http://tat-ooin.ifrance.com/resources/articles/il-bambino.htm il bambino dinverno] [http://demurediablo.ifrance.com/library/html/mari-gruppo/ mari (gruppo etnico della rus...] [http://noxuhax.ifrance.com/content/view/celo.htm celo-] {{Definition|'''Exploratory data analysis (EDA)''' was introduced by [[Tukey, John|John Tukey]] as an approach to analyze data when there is only a low level of knowledge about its cause system as well as ''contextual'' information. EDA aims at letting the data itself influence the process of suggesting hypotheses instead of only using it to evaluate given ''(a priori)'' hypotheses.<br>Explorative - opposed to Confirmatory - Data Analysis is like detective work looking for patterns, analomies or in general new insights and is usually done via graphical representations of the underlying data-set.}}


{{Quotation|Exploratory Data Analysis (EDA) is detective work – numerical detective work – or counting detective work – or graphical detective work ... unless exploratory data analysis uncovers indications, usually quantitative ones, there is likely to be nothing for confirmatory data analysis to consider ... [it] can never be the whole story, but nothing else can serve as the foundation stone - as the first step. |[Tukey, 1977, p. 1-3]}}
{{Quotation|Exploratory Data Analysis (EDA) is detective work – numerical detective work – or counting detective work – or graphical detective work ... unless exploratory data analysis uncovers indications, usually quantitative ones, there is likely to be nothing for confirmatory data analysis to consider ... [it] can never be the whole story, but nothing else can serve as the foundation stone - as the first step. |[Tukey, 1977, p. 1-3]}}
Line 12: Line 12:
Furthermore, EDA can be used to support the selection of appropriate statistical tools as well as to provide a basis for statistical inference and further data collection.  
Furthermore, EDA can be used to support the selection of appropriate statistical tools as well as to provide a basis for statistical inference and further data collection.  


Essential to EDA are graphical tools like ''box plots'', ''stem&ndash;and&ndash;leaf plots'', ''scatter plots'', or [[Timeline|timelines]].
Essential to EDA are graphical tools like ''box plots'', ''stem
 
== References ==
 
*[Filliben, 2004]: James J. Filliben, [http://www.itl.nist.gov/div898/handbook/eda/section1/eda11.htm NIST/SEMATECH e-Handbook of Statistical Methods], Retrieved at: November 15, 2004. http://www.itl.nist.gov/div898/handbook/eda/section1/eda11.htm
*[Keim et al., 2006] Keim, D.A.; Mansmann, F. and Schneidewind, J. and Ziegler, H., Challenges in Visual Data Analysis, Proceedings of Information Visualization (IV 2006), IEEE, p. 9-16, 2006.
*[Smith and Prentice, 1993]: A.F.Smith and D.A. Prentice, ''Exploratory data analysis'', A handbook for data analysis in the behavioral sciences: Statistical issues, pages 349-390, 1993.
*[Tukey, 1977]: John W. Tukey, : Exploratory Data Analysis. Addison-Wesley, 1977.
 
[[Category: Glossary]]

Revision as of 22:44, 20 August 2007

film gioco di donna videogiochi gamecube chattanooga haiduc dragostea di tei sandrinha nua sborra calda tra le dita cesareragazzi ed io tra di voi siti di pompini felicity huffman masterizzatore dvd esterno per pc wonderful world lyrics wmpr danuna sinudyne 29 the voyeur cellulare spia email certificata google fa date per provini film firenze peg-perego pramette una donna tra due mondi la romeria masakazu katsura www piombino com emanuela folliero 2005 the sims su nintendo ds www glivec it miss brasile ragazzi senza disagio devianza e gerhard winkler disegni futurama exilim pro ex-p700 jimmi fontana tecnocasa appartamenti pavia e provinc mari land microgonna il mistero delle cinque dita il poliziotto saturno (astronautica) betsy elaborazione scooter ddr vdata one shot 80 volume 2 trick me di kelis il segno di robin hood canon 18-55mm shadows ashlee simpson assault - profondo nero video clip metallica volare basso prezzo age of empire iii accessori 2020 corsair cmx 3200xl rita moric ultimo cd 883 mu immortal disalberare foto di donne porno vendita vettura brainwave bmw z3 3 2 laminati abet print culi rotti gratis sms mondiali xlukex dirty dancing film come trovare cazzi a roma dragoste di tei max scopate hp compaq dx6100 usted mar chiquita interfaccia bluetooth usb solletico love hona videocamera mustek 5000 finale a valvole hp laserjet 3020 toner corpo foresta lcd 10 pollici volantini circuiti moto gp la guerra dei nibelunghi mi manca i pod mp3 apple dvd combo vhs divx biglietto visita gratis ibm thinkpad computers maddnes gallerie porno gratuite signora di giorno amante di notte nuovi cellulari nero acryllium nokia 7610 memoria vacanza in turchia regione trentino alto adige la strada dei peccatori donna mathews la scarpetta e la rosa segnalazione - cartelli e insegne disco freno accessori auto e moto gps per palmari qtek programma dvd pelle ducati hard disk portatile lacie 40 pigro midi pino daniele i palazzi di venezia la storia della granata seconda pelle notebook p4 3 2 albergo cortina motorola accessori great teacher onizuka tesi automazione th 42 honda accord 7 serie bosley piatti termici etichette cd dvd regole yo gi ho living in a fantasy foto caccia meyal arigliano koganei usb memory stick suonerie da scaricare inno nationale chitarra blues garut frigoriferi 12 volt compressore fotocamera digitale canon 350 d taglia tubi red gratta e vinci video apple 512 testo di if aint got you foto di eva frigorifero side by french kisses hi-fi lg www mitchel vieth semisonic rs mmc 1 8 vanni rossi bcs 311 albergo lido di camaiore z200 cellulari sony ericsson calcio parma scheda gprs compact flash scribner, charles ford cayman blue c86 photo loghi cellulare sony globalsat pda holder tunnig tadap epson emp 730 domina coral bay oasis billy ydol foto di cazzi piccoli chat ragazze porche perla nera com annunci di donne troie in cerca di sesso abit nf7-m stamping ground radio anni 30 stasera io vorrei sentir la ninna nanna video amatoriale paris hilton terminatore scsi tecnici di macchine da gioco (regione emilia romagna) mesecina visti asilo e immigrazione gomma modding frankee nuda bmw x5 emilia romagna www killer pollo tomtom europe backstage manuela arcuri gratis nesta usb 250 whittier, john greenleaf eurothink cdtheque coppie cercano sigoli programma musica tv 12 pollici beat the meter dream dance vol 30 i simboli cristiani primitivi forni micronde gigolo california dream fuji s5500 rubias19 xg flash unito scuola canto wi-fi pci card bikkemberg uomo abbigliamento il bambino dinverno mari (gruppo etnico della rus... celo-

Exploratory data analysis (EDA) was introduced by John Tukey as an approach to analyze data when there is only a low level of knowledge about its cause system as well as contextual information. EDA aims at letting the data itself influence the process of suggesting hypotheses instead of only using it to evaluate given (a priori) hypotheses.
Explorative - opposed to Confirmatory - Data Analysis is like detective work looking for patterns, analomies or in general new insights and is usually done via graphical representations of the underlying data-set.
Exploratory Data Analysis (EDA) is detective work – numerical detective work – or counting detective work – or graphical detective work ... unless exploratory data analysis uncovers indications, usually quantitative ones, there is likely to be nothing for confirmatory data analysis to consider ... [it] can never be the whole story, but nothing else can serve as the foundation stone - as the first step.
[Tukey, 1977, p. 1-3]


Exploratory Data Analysis (EDA) is an approach/philosophy for data analysis that employs a variety of techniques (mostly graphical) to maximize
1. insight into a data set;
2. uncover underlying structure;
3. extract important variables;
4. detect outliers and anomalies;
5. test underlying assumptions;
6. develop parsimonious models; and
7. determine optimal factor settings.

The EDA approach is precisely that--an approach--not a set of techniques, but an attitude/philosophy about how a data analysis should be carried out.
[Filliben, 2004]


[...] is concerned primarily with explorations and description of data, not with inference. The techniques are designed to identify fundamental, conceptually meaningful patterns and relationships in data and to call attention to observations that deviate greatly from those fundamental patterns
[Smith and Prentice, 1993]


Exploratory data analysis as the process of searching and analyzing databases to find implicit but potentially useful information, is a difficult task. At the beginning, the analyst has no hypothesis about the data. According to John Tuckey, tools as well as understanding are needed [Tukey, 1977] for the interactive and usually undirected search for structures and trends.
[Keim et al., 2006]



Furthermore, EDA can be used to support the selection of appropriate statistical tools as well as to provide a basis for statistical inference and further data collection.

Essential to EDA are graphical tools like box plots, stem