The following frequency distribution shows the number of children of some families in a new city:
| Number of children | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| Number of families | 8 | 16 | 50 | 20 | 6 |
Calculate the mean and the standard deviation of the number of children.
MR/Nasef.N
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