Advertisements
Advertisements
Question
If the values of two variables move in same direction then the correlation is said to be
Options
Negative
Positive
Perfect positive
No correlation
Solution
Positive
APPEARS IN
RELATED QUESTIONS
Calculate the correlation coefficient for the following data.
X | 5 | 10 | 5 | 11 | 12 | 4 | 3 | 2 | 7 | 1 |
Y | 1 | 6 | 2 | 8 | 5 | 1 | 4 | 6 | 5 | 2 |
Calculate the coefficient of correlation between X and Y series from the following data.
Description | X | Y |
Number of pairs of observation | 15 | 15 |
Arithmetic mean | 25 | 18 |
Standard deviation | 3.01 | 3.03 |
Sum of squares of deviation from the arithmetic mean | 136 | 138 |
Summation of product deviations of X and Y series from their respective arithmetic means is 122.
If the values of two variables move in the opposite direction then the correlation is said to be
Correlation co-efficient lies between
The variable whose value is influenced (or) is to be predicted is called
If r = – 1, then correlation between the variables
Calculate the correlation coefficient from the following data:
∑X = 125, ∑Y = 100, ∑X2 = 650, ∑Y2 = 436, ∑XY = 520, N = 25
The value of the coefficient of correlation r lies between:
State and explain the different kinds of Correlation.
Calculate the Karl Pearson Correlation Co-efficient for the following data:
Demand for Product X : | 23 | 27 | 28 | 29 |
30 |
31 | 33 | 35 | 36 | 39 |
Sale of Product Y: | 18 | 22 | 23 | 24 | 25 | 26 | 28 | 29 | 30 | 32 |