### Home > MC1 > Chapter 7 > Lesson 7.3.2 > Problem7-113

7-113.

Alan collects rocks. He weighs them before he puts them in piles in his backyard. In the last two weeks, he has recorded the following weights: $32, 47, 25, 27, 36, 75, 40, 41, 33, 35, 32, 32, 28$, and $75$.

1. Make a stem-and-leaf plot to help him organize the information so that he can get a better idea of how hard he is working.

Refer to problem 6-18 for an example of a stem-and-leaf plot.

2. Find the mean, median, and mode for the information.

Don't remember what mean, median, and mode are?
Go back to problem 1-110 and look at the work done for that problem.

3. Which measure of central tendency was most affected by the outliers of $75$ pounds?

Remember that an outlier is a piece of data which does not fit with the rest of the data.

The mean was most affected. Can you explain why?