29. The data contains information on 5 individuals who were made to run an hour
ID: 3276529 • Letter: 2
Question
29. The data contains information on 5 individuals who were made to run an hour after consuming an energy drink. xdenotes each individual’s age and y denotes the distance covered by each individual (non-stop).
Obs. No.
x (age in years)
y(meters run)
1
10
112
2
12
100
3
56
89
4
59
78
5
62
43
(xi - x)2 = 2784.8 (yi - y)2 = 2781.2
What is the value of ((yi - y)/sy) or the sum of standardized values of y? sy denotes the standard deviation of y.
Select one:
a. 100
b. 0
c. 1
d. 50
Obs. No.
x (age in years)
y(meters run)
1
10
112
2
12
100
3
56
89
4
59
78
5
62
43
Explanation / Answer
Answer:
29. The data contains information on 5 individuals who were made to run an hour after consuming an energy drink. xdenotes each individual’s age and y denotes the distance covered by each individual (non-stop).
Obs. No.
x (age in years)
y(meters run)
((yi - y)/sy)
1
10
112
1.046703
2
12
100
0.591615
3
56
89
0.174451
4
59
78
-0.24271
5
62
43
-1.57006
Total
0
Mean y
84.40
sd of y
26.3685
(xi - x)2 = 2784.8 (yi - y)2 = 2781.2
What is the value of ((yi - y)/sy) or the sum of standardized values of y? sy denotes the standard deviation of y.
Select one:
a. 100
Answer: b. 0
c. 1
d. 50
Obs. No.
x (age in years)
y(meters run)
((yi - y)/sy)
1
10
112
1.046703
2
12
100
0.591615
3
56
89
0.174451
4
59
78
-0.24271
5
62
43
-1.57006
Total
0
Mean y
84.40
sd of y
26.3685
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