#### Skew

The graph shows the distribution of a random variable over the interval from 0 to 1.

The vertical line is the *mean* of the distribution.

The two coloured areas are the *bottom 50% of the distribution* and the *top 50% of the distribution*, so the border between them is the *median*.

**Click on the graph** to alter the distribution. The plot beneath it will show the *skew* of the resulting shape.

#### What does positive skew look like?

#### What does positive skew look like?

#### Where is order of *mean*, *median* and *mode* where the skew is negative?

#### Where is order of *mean*, *median* and *mode* where the skew is negative?

#### What is the effect on skewness of the overall height of the distribution?

#### What is the effect on skewness of the overall height of the distribution?

Click on a point, then click vertically higher or lower. What happens to the skew?