1. Professor Hill in the Music Department kept a list of the number of students visiting his office each week for two semesters (30 weeks). The results were:

15	23	17	13	3	9	7	6	8	11
16	32	27	4	20	3	28	5	6	11
20	12	8	10	25	10	8	15	11	9

1. Make a frequency table with five classes, showing class boundaries, class midpoints, frequencies, relative frequencies, cumulative frequencies, and cumulative relative frequencies.

1. Draw a frequency histogram using class midpoints.

• What does the variable in the table measure? Is it quantitative or qualitative?

1. If we were to predict student visitation of office hours (visits become a dependent variable), which independent variables would you choose to explain the number of office hour visits?

1. What is the median score (weight) for ungrouped data? What is the modal score for ungrouped data?

1. Estimate the mean for ungrouped data. Interpret the mean for ungrouped data. Compare the median, mode, and the mean for ungrouped data. What explains the differences, if any?

1. Compute the median, mode, and the mean for ungrouped data in SPSS

• What is the median score (weight) for grouped data? What is the modal score for grouped data?

• Estimate the mean for grouped data. Interpret the mean for grouped data. Compare the median, mode, and the mean for grouped data. What explains the differences, if any?

• Compute the median, mode, and the mean for grouped data in SPSS
• Estimate the variance

1. Estimate the Standard Deviation.
2. Estimate the skewness. Interpret.