Learning and Evaluation/Archive/Learning modules/3Reliability & Validity: Difference between revisions

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{{Project:Training/header | topic = Designing Effective Questions | title = '''Part 2: Reliability & Validity''' | pagestyle = 600-width }}

:Reliability and Validityvalidity are terms frequently used to describe howthe well-targetedaccuracy yourin surveywhich isproxy tomeasures measure or obtaintarget a specific piece of informationphenomena.

:'''Reliability''' tells us how well a survey is able to give us the same information if we were to survey the same respondents over and over.

:'''ValidityReliability''' ontells theus otherhow hand,well tellsa ussurvey howis closeable to ourgive targetus the ''same'' information if we were to survey the ''same'' respondents over and over.

:'''Validity''' is how well a survey is able to target the phenomena of interest.

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:'''Not Reliablereliable, Notnot Validvalid'''

:The survey is not measuring what it is aiming for and respondents are giving different answers each time the survey is administered.

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<td><span style="width:40px"><span style="color:white">-</span>[[File:Not reliable, not valid.png|x185px]] </span><br><br>

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:'''Low reliability, low validity'''

:The survey questions are not close enough to the target and respondents are still giving different answers each time thethey surveyrespond isto administeredthe survey.

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:'''Reliable, but not valid'''

: The questions are workingmore betterreliable in that respondentsparticipants answerare theanswering samesimilarly each time, butthey notare forasked, whathowever, the surveymeasurement is intendednot yet targeting the phenomena.

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<td ><span style="width:40px"><span style="color:white">..</span>[[File:Low validity, but reliable.png|x175px]]</span><br><br>

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:'''Valid and Reliablereliable'''

:Questions are written so that respondents always respond the same way and the questions are giving the information needed.

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<td><span style="width:40px"><span style="color:white">.</span>[[File:Reliable and Valid.png|x175px]]</span><br><br>

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