Students majoring in political science and sociology are asked to report the average number of hours per week spent studying. The data are presented in the following cross-tabulation

Political Science major Sociology major
Freshmen year 20 20
Sophomore year 15 30
Junior year 25 30
Senior year 30 15

1. Calculate the total percents for each cell.
2. Calculate the row percents.
3. Calculate the column percents.


1. 10.8%, 10.8%, 21.6%, 8.1%, 16.2%, 24.3%, 13.5%, 16.2%, 29.7%, 16.2%, 8.1%, 24.3%, 48.6%, 51.4%, 100%
2. 50%, 50%, 100%, 33.3%, 66.7%, 100%, 45.5%, 54.5%, 100%, 66.7%, 33.3%,
100%, 48.6%, 51.4%, 100%

3. 22.2%, 21.1%, 21.6%, 16.7%, 31.6%, 24.3%, 27.8%, 31.6%, 29.7%, 33.3%,
15.8%, 24.3%, 100%, 100%, 100%

Social Work & Human Services

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