Plz slove Q19 to 26 plz slove all question
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22)
Mean = sum of observations/ no. of observations = 76 / 8 = 9.5.
Standard deviation =
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22)
| Values X | x = X- mean | x2 |
| 3 | -6.5 | 42.25 |
| 5 | -4.5 | 20.25 |
| 6 | -3.5 | 12.25 |
| 7 | -2.5 | 6.25 |
| 10 | .5 | 0.25 |
| 12 | 2.5 | 6.25 |
| 15 | 5.5 | 30.25 |
| 18 | 8.5 | 72.25 |
| 76 | 190 |
Mean = sum of observations/ no. of observations = 76 / 8 = 9.5.
Standard deviation =
You are requested not to ask many questions in single thread for different questions use different threads.
Regards