# Question: Refer to the previous exercise a Use the Mean Versus Median

Refer to the previous exercise.

a. Use the Mean Versus Median applet to investigate what effect adding the outlier of 90 to the data set has on the mean and median.

b. Now add 10 more data values that are near the mean of 2 for the original 10 observations. Does the outlier of 90 still have such a strong effect on the mean?

a. Use the Mean Versus Median applet to investigate what effect adding the outlier of 90 to the data set has on the mean and median.

b. Now add 10 more data values that are near the mean of 2 for the original 10 observations. Does the outlier of 90 still have such a strong effect on the mean?

## Answer to relevant Questions

If you had data for all students in your school on the amount of money spent in the previous year on overnight stays in a hospital, probably the median and mode would be 0 but the mean would be positive. a. Explain why. b. ...A recent General Social Survey asked female respondents, “How many sex partners have you had in the last 12 months?” Of the 365 respondents, 102 said 0 partners, 233 said 1 partner, 18 said 2 partners, 9 said 3 partners, ...For an exam given to a class, the students’ scores ranged from 35 to 98, with a mean of 74. Which of the following is the most realistic value for the standard deviation: -10, 0, 3, 12, 63? Clearly explain what’s ...A recent General Social Survey asked respondents how many close friends they had. For a sample of 1467 people, the mean was 7.4 and the standard deviation was 11.0. The distribution had a median of 5 and a mode of 4. a. ...The standard deviation, the range, and the interquartile range (IQR) summarize the variability of the data. a. Why is the standard deviation s usually preferred over the range? b. Why is the IQR sometimes preferred to s? c. ...Post your question