The table below shows a distribution of bristle number in Drosophila. Calculate

Question

The table below shows a distribution of bristle number in Drosophila. Calculate the mean, variance, and standard deviation of this distribution.

Bristle number                Number of individuals

1                                                 4

2 9

3                                                 7

4                                                 30

5                                                 42

6                                                 22

7                                                 6

Explanation / Answer

4 8 7 30 42 22 6 variance 215 mean 17.00 standard deviation 14.6629

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