1 Henrietta lives on a small farm where she keeps some hens.
For a period of 35 weeks during the hens' first laying season, she records, each week, the total number of eggs laid by the hens.
Her records are shown in the table.
| Total number of eggs laid in a week ( \(\boldsymbol { x }\) ) | Number of weeks ( f) |
| 66 | 1 |
| 67 | 2 |
| 68 | 3 |
| 69 | 5 |
| 70 | 7 |
| 71 | 8 |
| 72 | 4 |
| 73 | 2 |
| 74 | 2 |
| 75 | 1 |
| Total | 35 |
- For these data:
- state values for the mode and the range;
- find values for the median and the interquartile range;
- calculate values for the mean and the standard deviation.
- Each week, for the 35 weeks, Henrietta sells 60 eggs to a local shop, keeping the remainder for her own use.
State values for the mean and the standard deviation of the number of eggs that she keeps.
[0pt]
[2 marks]