a. Find Mean, Median, range, and variance of variable "Net Sales", "Items", and "Age".
b.Summarize variable "Method of Payment", show frequency, relative frequency and percent frequency. What infromation do you learn from this table?
C.Show the relationship between variable "Net Sales" and "Age" with a scatter diagram. What did you find?
d.compute z-score for the variable "Net Sales". Is there any outliers?
Sample Solution