Problem 4 Data Y = SBP X #Hrs Exercise 120 4 110 10 2 120 3 135 3 140 115 5 15 2 165 160 0 180 Problem 4 l of Hours (X-Ху(Ү - (Y-Y (X-Ху Y х-X Y-Y Exercise Y) -12.8 4 0.8 0.64 120 -16 -26 -176.8 10 6.8 46.24 110 2 -1.2 120 19.2 1.44 -16 3 -0.2 0.04 135 0.2 -1 3 .02 140 4 0.04 5 18 3.24 115 -2.2 1 115 2 -1.2 165 160 2 -1.2 -3.2 180 -32/10-3.2 1360/10 -367

Question

(Previous Problem for reference: A randomsample of 10 males 50 years of age is selected and their weights, heights, and systolic blood pressures are measured. Their weights and heights are transformed into body mass index scores and are given below. In this analysis, the independent variable is body mass index and the dependent variable is systolic blood pressure)

Problem 4

Suppose in the same study we also measure the number of hours of vigorous excercise per week. Is there a relationship between the number of hours of excercise and SBP in males 50 years of age?

 

Then using the completed table and equations listed, calculate the correlation efficient. 

Problem 4
Data
Y = SBP
X #Hrs Exercise
120
4
110
10
2
120
3
135
3
140
115
5
15
2
165
160
0
180
Expand
Transcribed Image Text

Problem 4 Data Y = SBP X #Hrs Exercise 120 4 110 10 2 120 3 135 3 140 115 5 15 2 165 160 0 180

Problem 4
l of Hours
(X-Ху(Ү -
(Y-Y
(X-Ху
Y
х-X
Y-Y
Exercise
Y)
-12.8
4
0.8
0.64
120
-16
-26
-176.8
10
6.8
46.24
110
2
-1.2
120
19.2
1.44
-16
3
-0.2
0.04
135
0.2
-1
3
.02
140
4
0.04
5
18
3.24
115
-2.2
1
115
2
-1.2
165
160
2
-1.2
-3.2
180
-32/10-3.2
1360/10
-367
Expand
Transcribed Image Text

Problem 4 l of Hours (X-Ху(Ү - (Y-Y (X-Ху Y х-X Y-Y Exercise Y) -12.8 4 0.8 0.64 120 -16 -26 -176.8 10 6.8 46.24 110 2 -1.2 120 19.2 1.44 -16 3 -0.2 0.04 135 0.2 -1 3 .02 140 4 0.04 5 18 3.24 115 -2.2 1 115 2 -1.2 165 160 2 -1.2 -3.2 180 -32/10-3.2 1360/10 -367

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