## Fantastic Friday #5: Styrofoam Balls

## How many Styrofoam balls are in the jar?

(Your guess must be between 20,000 and 23,000.)

## Math 6.2 |
## Math 6.3 |
## Math 6.4 |

## Goal: Know the effects outliers have on a data set.

## APK: With your group, discuss how you calculate mean, median, mode, and range.

## Lesson:

1. In order to calculate data, wouldn't it be easier if you could sort the data from smallest to greatest, or greatest to smallest, quickly and easily? Watch the video and learn how.

2. Each student in your group needs to make a copy of your class's data set. Rename your new file with your name in the title. (Example: Curtis 6.2 Date Set)

3. Sort the data from smallest to largest.

4. With your team, use the data set to find the mean, median, mode, and range.

5. Group Discussion: How would the mean, median, mode, and range change if a smaller outlier was added to the group?

6. Charlie guessed that they were 5,668 Styrofoam balls in the jar. Recalculate the mean, median, mode, and range for you class including Charlie's guess. (Remember there is one more student in the class.)

7. Group Discussion: How would the mean, median, mode, and range change if a larger outlier was added to the group?

8. Charlie changed his guess to 37,934 Styrofoam balls in the jar. Recalculate the mean, median, mode, and range for your class with Charlie's new guess. (Do not include Charlies first guess.)

9. Use the link below to access the Google form for your class. Enter your results for today.