# Dot Manipulatives

- Author:
- Jonathan Garfield

Click on the plus sign under a dot to move it to a new location on the number line. The measures of center and spread will automatically update.

1. Move dots on the dot plot so that the MEAN is twice as big as it was originally, but the IQR and MAD are the same.
a. Explain how you changed the data:
b. Why did that have the desired effect on the measures of center and spread?
2. Move dots on the dot plot so that the MEAN is lower, but the MEDIAN stays the same.
a. Explain how you changed the data:
b. Why did that have the desired effect on the measures of center and spread?
3. Move dots on the dot plot so that the MEAN is the same, but the MAD increases.
a. Explain how you changed the data:
b. Why did that have the desired effect on the measures of center and spread?
4. Move dots on the dot plot so that the MEDIAN is lower, but the IQR stays the same.
a. Explain how you changed the data:
b. Why did that have the desired effect on the measures of center and spread?
5. Move dots on the dot plot so that the MAD is lower, but the IQR is higher.
a. Explain how you changed the data:
b. Why did that have the desired effect on the measures of center and spread?