You are a manager in one of the branches of a restaurant. The area manager assigned you to analyze the statistical data of the ages of the customers who eat in your

restaurant. From the survey forms, the following are the summary of their evaluations:

Age No. of Customers

16–20 32

21–25 40

26–30 15

31–35 29

36–40 11

Using the given data, determine how spread out the ages of the customers are using

measures of variability. Find out what ages fall within one standard deviation from the

mean. Knowing this, what range of ages or what age group should the restaurant give

more focus on, and what products do you think should the restaurant come up with to

generate higher sales? Submit a typewritten report detailing your answers, solutions, and

explanations to these questions.​