Validating surveys reliability validity
In addition, a link among the objectives of the study and their translation into content is established.
For example, the researcher must indicate what the questionnaire is measuring, that is, knowledge, attitudes, perceptions, opinions, recalling facts, behavior change, etc.
Scales are devices used to quantify a subject's response on a particular variable.
Understanding the relationship between the level of measurement and the appropriateness of data analysis is important.
As a result of Steps 1-3, a draft questionnaire is ready for establishing validity.Reliability is established using a pilot test by collecting data from 20-30 subjects not included in the sample. Data collected from pilot test is analyzed using SPSS (Statistical Package for Social Sciences) or another software. These are "correlation matrix" and "view alpha if item deleted" column. The Fog Index, Flesch Reading Ease, Flesch-Kinkaid Readability Formula, and Gunning-Fog Index are formulas used to determine readability.
Approval from the Institutional Review Board (IRB) must also be obtained.
After developing a thorough understanding of the research, the next step is to generate statements/questions for the questionnaire.