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Correlation — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsCorrelation3 Marks
Question
Draw a scatter diagram and interpret whether the correlation is positive or negative.
X
4
5
6
7
8
9
10
11
12
13
14
15
Y
78
72
66
60
54
48
42
36
30
24
18
12
✓

Answer

The pair of points are (4, 78), (5, 72), (6, 66), (7, 60), (8, 54), (9, 48), (10, 42), (11, 36), (12, 30), (13, 24), (14, 18) and (15, 12). Now we plot the points on a graph paper, which is shown below:
The diagram indicates that there is perfect negative correlation between the values of the two variables X and Y.

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