SubjectQuantitative Methods ISBN 9781111342807 Applied Stati

Subject:Quantitative Methods: ISBN 9781111342807 Applied Statistics for PUblic and Nonprofit Administration eight edition page 30 problem 2.6

Evaluate the validity and reliability of the survey question “To what extend does this department have waste and inefficiency in its operations?” as a measure of the waste and inefficiency in the department. Suggest other measures that the department could use to measure waste and inefficiency and explain why they would be an improvement over the survey question

Solution

The degree of stability exhibited when a measurement is repeated under identical conditions. Lack of reliability may arise from divergences between observers or instruments of measurement or instability of the attribute being measured

Reliability is assessed in 3 forms

Test-retest reliability

Alternate-form reliability

Internal consistency reliability

Here we use Alternative -form reliability becuase responses are reworded or their order is changed to produce two items that are similar but not identical that is waste and efficieny and the two items address the same aspect of behavior with the same vocabulary and the same level of difficulty.

Validity is defined as an indicator that contains very little error.

Face validity, Content validity, Criterion validity, Construct validity

Here we use content validity because you incorporate these two assessments of validity into your survey instrument design process and consists of an organized review of the survey’s contents to ensure that it contains everything it should and doesn’t include anything that it shouldn’t still very qualitative.