SCALE, RELIABILITY AND Validity

When attributes can be rank-ordered…

•Distances between attributes do not have any meaning, for example, code Educational Attainment

• Nominal

• ordinal

• ratio

• interval

•The values “name” the attribute uniquely.

The value does not imply any ordering of the cases, for example, jersey numbers in football

• Nominal

• ordinal

• interval

• ratio

•This level of measurement is used for numerical data with equal intervals or distances between values, but no true zero point. Examples include:

•Temperature (in Celsius or Fahrenheit)

• Nominal

• ordinal

• interval

• ratio

Which one of the followng is the type of reliability?

• Test-Retest

• Concurrent

• Predictive

• Criterion

unipolar rating scale designed to measure the respondent’s attitude towards the object or event.+3

+2

+1

Food Quality

–1

– 2

– 3

• Dichotomous Scale

• Semantic Differential Mail

• Stapel Scale

• Fixed sum

Internal Consistency is measured through

• % agreement between variables

• Correlation between responses

• Cronbach Alpha

• Test-Retest

scale designed to examine how strongly subjects agree or disagree with statements on a five-point scale.

Example:

This job is interesting.

Strongly agree  Agree  Neutral  Disgree  Strongly disagree

• Staple

• Semantic Differential

• Dichotomous

• Likert

In choosing a toilet soap, indicate the importance you attach to each of the following five aspects by allotting points for each to total 100 in all.

  Fragrance   —

  Color  —

  Shape   —

  Size    —

  Texture of lather   —

  Total points   100

• Semantic scale

• Dichotomous scale

• Likert Scale

• Fixed or constant sum scale

Two-point scale which presents options that are absolutely opposite each other. This type of response scale does not give the respondent an opportunity to be neutral on his answer in a question.

Examples

Yes … No
True … False
Agree … Disagree

• Semantic Differential

• category

• Dichotomous

• Stapel

Which one of the following is the type of validity?

• Content

• Test-Retest

• Split half

• Paralell forms