Question no 25: What is the primary purpose of item analysis in research?
Answer: The primary purpose of item analysis is to evaluate the quality and effectiveness of items within a research instrument, ensuring they align with research objectives.
Question no 26: How is item validity different from item suitability in the context of item analysis?
Answer: Item validity refers to whether items accurately measure what they are intended to measure, while item suitability assesses whether items are appropriate for the research context and target population.
Question no 27: Why is it important to assess item difficulty in item analysis?
Answer: Assessing item difficulty helps identify items that may be too easy or too difficult for participants, ensuring a balanced and fair assessment.
Question no 28: What does item discrimination measure, and why is it important?
Answer: Item discrimination measures how well each item differentiates between participants with varying levels of the construct being measured. It is important to select items with high discrimination to effectively assess participants' abilities.
Question no 29: In item analysis, what is meant by item reliability, and why is it a crucial consideration?
Answer: Item reliability assesses the consistency of responses to each item. It is crucial because low reliability may indicate that an item is not consistently measuring the intended construct, leading to inaccurate results.
Question no 30: What steps are typically involved in item modification during the item analysis process?
Answer: Item modification involves reviewing and potentially rewording or eliminating items that do not meet the desired criteria of validity, reliability, and suitability based on the results of the analysis.
