A teacher wants to determine how class attendance during the term affects grades

Question

A teacher wants to determine how class attendance during the term affects grades on the final exam. Describe how the data would be collected in a prospective observational study O The teacher might record exam scores throughout the term O The teacher might record attendance information throughout the term. O At the end of the term, ask students to remember and report their attendance for the term. Describe how the data would be collected in a retrospective observational study O The teacher might record attendance information throughout the term. O At the end of the term, ask students to remember and report their exam scores for the term. O At the end of the term, ask students to remember and report their attendance for the term. Refer to the previous parts. Give one disadvantage for each method of collecting the data in this situation The disadvantage of the prospective study is that students may not accurately remember or report their attendance habits. The disadvantage of the retrospective study is that student behavior might be altered if they know that the teacher is keeping attendance records. O The disadvantage of the prospective study is that student behavior might be altered if they know that the teacher is keeping attendance records. The disadvantage of the retrospective study is that students may not accurately remember or report their attendance habits. O The disadvantage of the prospective study is that student behavior might be altered if they know that the teacher is recording exam scoress. The disadvantage of the retrospective study is that students may not accurately remember or report their exam scores.

Explanation / Answer

In a prospective study:

The teacher might record attendance information throughout the year.

Since in a prospective study we observe the results or observations during the study.

In a retrospective observational study:

At the end of term, ask students to remember and report their attendence for the term.

Since in a retrospective study we go backward to colect observations from the start.

The disadvantages of each methods are:

The disadvantage of prospective study is that students behaviour might be altered if they know that the teacher is keeping attendence records. The disadvantage of retrospective study is that students may not accurately remember or report their attendence habits.

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