Central tendency and dispersion in statistics, Applied Statistics

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Central Tendency and Dispersion in Statistics:

Write a note on the following :

i) What is the importance of Measures Of Central Tendency and Dispersion in Statistics ?

ii) Define Correlation coefficient and discuss two methods of its computation .

iii) What is regression analysis ? Discuss the relation between 'correlation coefficient ' and the 'regression coefficients'.

Ques: Data on the scores obtained by A & B are given below :

23 24 43 37 26

43 37 29 49 41

23 37 43 41 26

37 24 29 43 49

29 18 23 24 25

23 24 28 35 39

34 18 35 24 42

37 41 25 23 39

i) Compare Arithmetic Mean and Standard Deviation for the two groups and compute pooled mean and variances.

ii) Comment on the consistency between A and B.

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