# Which Class?

## Work Time

# Which Class?

To better understand whether the mean is a good representation of a data set, you can calculate a measure called the *mean absolute deviation* (MAD).

The MAD is a measure of how spread out the values in a data set are from the mean. The greater the MAD is, the farther away the data are, on average, from the mean.

- Which class do you think will have the highest MAD?
- Which class do you think will have the lowest MAD?
- Explain your answers.

## Hint:

- Will most of the data with a low MAD be close to the mean or far away?
- Will most of the data with a high MAD be close to the mean or far away?