2.3

 3.1: Compute the mean, median, first quartile, and third quartile for these sample data. 

3-9. The manager for Jiffy Lube auto service center has collected data on the number of customers who agreed to purchase an air filter when they were also having their oil changed. The sample data are shown as follows:

1. Compute the mean, median, and mode for these data.
2. Indicate whether the data are skewed or symmetric.
3. Construct a box and whisker plot for these data. Referring to your answer in part b, does the box plot support your conclusion about skewness? Discuss.

Please look at the attached file for the instructions!