# statistics, question 4, grade 10

4)

Consider the statistical table showing the number of articles written by 50 journalists thru 10 days:

x_{i} |
2 | 5 | 7 | 10 | a | total |

n_{i} |
5 | 10 | 10 | b | 12 | 50 |

I.C.F. |

- Specify the
**population**and its**size, the individual**; and the**variable**, its**kind**and its**values**. - Find a and b knowing that the range is 10.
- Using the calculator, find the mean and the standard deviation .
- Complete the I.C.F table , determine the
**median**and explain its meaning.