Advertisements
Advertisements
Question
If r(X,Y) = 0 the variables X and Y are said to be
Options
Positive correlation
Negative correlation
No correlation
Perfect positive correlation
Solution
No correlation
APPEARS IN
RELATED QUESTIONS
Find the coefficient of correlation for the following:
Cost (₹) | 14 | 19 | 24 | 21 | 26 | 22 | 15 | 20 | 19 |
Sales (₹) | 31 | 36 | 48 | 37 | 50 | 45 | 33 | 41 | 39 |
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.
The correlation coefficient from the following data N = 25, ∑X = 125, ∑Y = 100, ∑X2 = 650, ∑Y2 = 436, ∑XY = 520
The variable whose value is influenced (or) is to be predicted is called
Scatter diagram of the variate values (X, Y) give the idea about
If two variables moves in decreasing direction then the correlation is
If r = – 1, then correlation between the variables
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 |