For an experiment we have the following data set: n = 4, ∑ X = a,∑ Y = 10,∑ XY = 21,∑ X2 = 30,∑ Y2 = 30 the correlati...
In one way ANOVA, σ2 is estimated by:
The median of following observations 8, 9, 10, 8, 8, 10, 8, 9 is
If the second and third moment about the origin are 8 and 18 and the third moment about mean is -14 , then the first moment about the origin is:
Following two statements are related to regression coefficient
(I) Independent of the change of origin
(II) Independent of the change of scale
If the first, fifth and ninth decile of frequency distribution xi ∣ fi are 3,10,16, respectively, then Kelly's coefficient of skewness is:
For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
The purchasing power of money is equal to:
Which of the following correctly completes the given statement?
Index number helps in:
(I) determining the cost of living
(II) ...