Using the data in given Exercise, determine the mean and the median number of goals per season that Mr. Gretzky scored during his 20 seasons in the National Hockey League.
Exercise
The following performance scores have been recorded for 25 job applicants who have taken a preemployment aptitude test administered by the company to which they applied:
![1113_Data.jpg](https://secure.tutorsglobe.com/CMSImages/1113_Data.jpg)
Construct a frequency distribution and a histogram for these data.