HW2

Below is data collected from a sample of 20 college students on what grade they expect to receive in their SOC 301 course:

100, 75, 75, 88, 81, 72, 77, 75, 71, 77, 95, 85, 81, 90, 40, 71, 77, 88, 70, 90

1. Make a frequency table, including the frequency, percentage, valid percentage and cumulative percentage.

2. What is the mode, median and mean of the above data?

3. What is the range, variance, and standard deviation of the above data?

4. Are their any outliers? If so, which ones are they? Which outlier definition did you use? (Show your math)

5. Make a graph to display the above data.

6. Does the above data approximate a normal distribution?

7. Recode (regroup) the above data into a variable with the following categories (A, B, C, D, F). Make a new frequency distribution , including the frequency, percentage, valid percentage and cumulative percentage.

8. Make a new graph to display the recoded data.