A sales manager collected the following data on annual sales and years of experi
ID: 1192831 • Letter: A
Question
A sales manager collected the following data on annual sales and years of experience.
Salesperson
Years of Experience
Annual Sales ($1000s)
1
1
80
2
3
97
3
4
92
4
4
102
5
6
103
6
8
111
7
10
119
8
10
123
9
11
117
10
13
136
a. Develop a scatter diagram for these data with years of experience as the independent variable.
b. Develop an estimated regression equation that can be used to predict annual sales given the years of experience.
c. Use the estimated regression equation to predict annual sales for a salesperson with 9 years of experience.
Salesperson
Years of Experience
Annual Sales ($1000s)
1
1
80
2
3
97
3
4
92
4
4
102
5
6
103
6
8
111
7
10
119
8
10
123
9
11
117
10
13
136
Explanation / Answer
a. No corelation observed from this data. So
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