Question

6 Geoff is the Headmaster of a local school, who has to report to the board of Governors on how well the school is performing. He does this by comparing the test scores of pupils across an entire school. He has worked out the mean but also wants know the spread about the mean so that the Governors can see that it is representative of the whole school. He uses a well-known formula from statistics for the upper bound b of a class mean: 3s b=at ✓n where s = sample spread about the mean, n = the sample size, a = the school mean and b = the mean maximum value, If Geoff wants to calculate the standard deviation (diversion about the mean) from values of b, n and a he will need to rearrange this formula to make s the subject. Rearrange the formula to make s the subject to help Geoff​

Answer 1

Answer:

what it is it is not clear writing please try to write clearly