Normal/Skewed distribution

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4 Terms

1
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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.

2
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Describe a normal distribution.

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

3
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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

4
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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.