Exercise 92 Page 616

If the mean and standard deviation are good measurements for summarizing the data, we should not have any outliers. To determine if this is the case, we should will plot them on a number line and look for outliers.

Examining the number line, we cannot detect any outliers. Therefore, the mean and standard deviation are a good way to describe the sample. First, we have to enter the values into a list. Push $\boxed{\text{STAT}}$, choose Edit, and then enter the values in the first list, $\text{L}1.$

To calculate the mean and standard deviation, push $\boxed{\text{STAT}}$ and scroll right until you reach CALC. Choose the first option, 1-Var Stats.

The median is given by $\bar{x}$ and the standard deviation by $\sigma x.$ Therefore, the mean is $50.69$ and the standard deviation is $2.57.$