33. The data contains information on 5 individuals who were made to run an hour
ID: 3303150 • Letter: 3
Question
33. 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
If x is expressed in years and y is expressed in meters, what is the unit in which the sample correlation coefficient between x and y is expressed?
Select one:
a. Meters*Years
b. Meters squared*Years squared
c. No units or unit free
d. Square root of meters* Square root of years
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
Sample correlation coefficient is basically an indicator of linear relationship and it is a unitless quantity.
Hence,
Option C is correct.
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