(2) types of data

Upload: asclabisb

Post on 14-Apr-2018

216 views

Category:

Documents


0 download

TRANSCRIPT

  • 7/30/2019 (2) Types of Data

    1/10

    AppliedSta+s+csandCompu+ngLab

    TYPESOFDATA

    AppliedSta+s+csandCompu+ngLab

    IndianSchoolofBusiness

  • 7/30/2019 (2) Types of Data

    2/10

    AppliedSta+s+csandCompu+ngLab

    LearningGoals

    WhatisData? NeedforclassifyingDataintoTypes DifferenttypesofData

    VariousClassificaons

    2

  • 7/30/2019 (2) Types of Data

    3/10

    AppliedSta+s+csandCompu+ngLab

    Data

    Recorded,relevantinformaon Notnecessarilyjustnumbers Anyrelevantfacts,figures,observaonsor

    descriponsofthings

    3

  • 7/30/2019 (2) Types of Data

    4/10

    AppliedSta+s+csandCompu+ngLab

    NeedfordifferenttypesofData

    Example:CarsDataCarTypePrice

    Whatisthedifferencebetweenthesetwo?ThetypeofinformaonThequantyofinformaon

    Hence,theneedfordifferenangbetweentheformsofData

    4

  • 7/30/2019 (2) Types of Data

    5/10

    AppliedSta+s+csandCompu+ngLab

    QualitaveandQuantaveData

    Example: Type,MakeofCar,Rang

    (Qualita+ve/Categorical)

    Price,Mileage,Cylinders(Quan+ta+ve/Numeric)

    Definions: Qualita+ve:Descripons,cannot

    actuallybemeasured,placesdata

    intocategories(akaCategorical

    Data)

    Quan+ta+ve:Measurements,numeric

    5

  • 7/30/2019 (2) Types of Data

    6/10

    AppliedSta+s+csandCompu+ngLab

    NominalandOrdinalScaleData

    Qualitave: Type,Makeofacar(Nominal) Rangs(Ordinal)

    Definions: Nominal:Simplyallocaonintodisnctcategories,notmeasuredor

    ordered

    Sex,Color,Naonality Ordinal:Classifiedbasedonwhethertheyhavemoreorlessofa

    characterisc.Thesecategorieshavealogicalorderingbetweenthem

    IncomeGroup,Rateacourseetc.

    6

  • 7/30/2019 (2) Types of Data

    7/10

    AppliedSta+s+csandCompu+ngLab

    IntervalandRaoScaledata

    Quantave: Datethecarwasmanufacturedon(Interval) Price,Mileage(Ra+o)

    Definions: Interval:allowsforthedegreeofdifferencebetweenitems,butnot

    theraobetweenthem,arbitrarilydefinedZerovalue Temperature,Dates

    Ra+o:permitsthecomparisonofdifferencesinvalues,hasafixedzerovalue

    Area,height,weight,numberofcustomersenteringastoreinaday

    7

  • 7/30/2019 (2) Types of Data

    8/10

    AppliedSta+s+csandCompu+ngLab

    ScalesofMeasurement

    8

  • 7/30/2019 (2) Types of Data

    9/10

    AppliedSta+s+csandCompu+ngLab

    DiscreteandConnuousData

    Cylinders(Discrete) Price(Con+nuous) Definions:

    Discrete:finitenumberofvaluespossible,countable,spacebetweenanytwopossiblevaluesonthenumberline.

    NumberofmesthepriceofstockAchangedbeforethemarketclosed:

    Con+nuous:infinitepossiblevalues,formsaconnuum Timetakenforthestockpricetochangeforthesecondme(Inseconds

    9

    0123456789101112

    060

  • 7/30/2019 (2) Types of Data

    10/10

    AppliedSta+s+csandCompu+ngLab

    Thankyou