Normal/Skewed distribution

Describe what is meant by a skewed distribution.

When the spread of data is not symmetrical but instead clusters towards one end of the graph. The mode is located at the highest point, in a different position from the median and from the mean.

Describe a normal distribution.

Symmetrical (bell shaped) spread of data, with the mean, median and mode all in the centre.

Describe a positively skewed distribution.

Most of the data is centred on the left hand side of the graph, with the long ‘tail’ on the positive side of the graph

Describe a negatively skewed distribution.

Most of the data is centred on the right hand side of the graph, with the long ‘tail’ on the negative side of the graph.

Fill in the gaps

1. Negative

2. Mean

3. Median

4. Mode

5. Positive

6. Mode

7. Median

8. Mean