Question

A random sample of scores on a recent test wereselected and recorded below68, 71, 77, 82, 85, 88, 89, 90, 92, 93, 96, 99Calculate the mean and standard deviation for the dataset. Round your answers to 3 decimal places.Sample mean:Sample standard deviation Sy =

Answer 1

Given Data:-

`68,71,77,82,85,88,89,90,92,93,96,99`

To find the sample mean, add all the numbers and divide it by the total number of data given.H

`\begin{gathered} x=(68+71+77+82+85+88+89+90+92+93+96+99)/(12) \\ x=(1030)/(12) \\ x=85.833 \end{gathered}`

So the mean of the given data is 85.833