Question

A university alumni office conducted a survey of their alumni to assess changes in attitudes toward the university over time. In the first year of the survey, the alumni office surveyed graduates from the year 2009. In the second and third years of the survey, graduates from the years 2011 and 2013 were surveyed, respectively. When examining the results of the survey to determine whether attitudes of the alumni changed over time, the alumni office should consider _________.

Answer 1

Answer: Potential issue of comparing non-suitable samples.

Explanation: The situation mentioned in the question concluded to be problem of comparing the non- suitable samples. The samples are taken in survey for evaluating the attitude of the alumni towards the university from different years .

The comparison is made between non-serial order of students alumni(Like year 2009,2011 and 2013) which belong to different years which is not in sequence manner.Thus ,the evaluation obtained is not considerable as the samples does not make sense for the comparison.