Table 1 Student population and Quarterly sales data for 10 armored Pizza parlors Restaurant Student Population (1000s) x

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Table 1
Student population and Quarterly sales data for 10 armored Pizza
parlors
Restaurant
Student Population (1000s)
x
Quarterly Sales (1000s)
y
1
2
58
2
6
105
3
8
88
4
8
118
5
12
117
6
16
137
7
20
157
8
20
169
9
22
148
10
26
202
a. Plot the scatter diagram of table 1. What is the relationship
between the student population and quarterly sales? How do you
know?
Explain. 5
marks
b. Develop a mathematical equation in the form y =
a+bx. 9
marks
c. Predict the quarterly sales for a restaurant to be located
near a campus with 16,000 students. 2 marks
d. Calculate the Product Moment Correlation (r) and explain the
strength of the relationship between student population and
quarterly
sales. 4
marks
e. If coefficient of determination was to be considered, what
would this value be and what would its meaning
be? 5
marks