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प्रश्न
Of the following three measures which can measure any type of relationship.
विकल्प
Karl Pearson’s coefficient of correlation
Spearman’s rank correlation
Scatter diagram
उत्तर
Scatter diagram
Explanation:
A Scatter diagram can measure any type of relationship whether the variables are highly related or not at all related. Just by looking at the diagram, the viewer can easily conclude the relationship between the two variables involved. On the other hand, Karl Pearson's coefficient of correlation is not suitable for the series where deviations are calculated from the assumed mean. Likewise, Spearman's rank correlation also disqualifies measuring any kind of relationship as its domain is restricted only to the qualitative variables (leaving quantitative variables).
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संबंधित प्रश्न
If rxy is positive the relation between X and Y is of the type ______
If rxy = 0 the variable X and Y are ______
Can r lie outside the –1 and 1 range depending on the type of data?
Does zero correlation mean independence?
Can a simple correlation coefficient measure any type of relationship?
Interpret the values of r as 1, –1, and 0.
Calculate the correlation coefficient between the heights of fathers in inches (X) and their sons (Y)
|
X |
65 |
66 |
57 |
67 |
68 |
69 |
70 |
72 |
|
Y |
67 |
56 |
65 |
68 |
72 |
72 |
69 |
71 |
Calculate the correlation coefficient between X and Y and comment on their relationship:
|
X |
-3 |
-2 |
-1 |
1 |
2 |
3 |
|
Y |
9 |
4 |
1 |
1 |
4 |
9 |
Calculate the correlation coefficient between X and Y and comment on their relationship.
|
X |
1 |
3 |
4 |
5 |
7 |
8 |
|
Y |
2 |
6 |
8 |
10 |
14 |
16 |
