Cronbach's alpha can describe reliability of factors extracted from_ dichotomous questions the extent to which an instrument, a survey, measures what it is supposed to measure: validity is an assessment of its accuracy Validity 2 forms of validity face and content validity in the view of the respondents, the questions measure what they are intended to measure the survey has face validity if in the view of experts (for example, health professionals for patient surveys), the survey contains questions which cover all aspects of the construct being measured A survey has content validity weakest form of validity Face validity is the extent to which the measures derived from the survey relate to other external criteria Criterion validity Criterion validity can either be concurrent or predictive. false - The higher the score, the more reliable the generated scale is. situational reliability used to assess the internal consistency of a questionnaire made up of multiple Likert-type scales and items & you wish to determine if the scale is reliable Cronbach's alpha Cronbach's alpha coefficient ranges from 0 to 1 true/ false: The lower the score, the more reliable the generated scale is. Threats to reliability of a measurement under unsystematic - subject reliability
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