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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 :
A
B
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.
Use only the rare event rule, and make subjective estimates to determine whether events are likely. For example, if the claim is that a coin favors heads and sample results consis
quote
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Features of index numbers
Consider the following new business venture. An agent is considering investment in one of three real estate parcels: • Option 1: multiunit rentals • Option 2: commercial building
The total number of overtime hours (in 1000s) worked in a large steel mill was recorded for 16 quarters, as shown below. Year Quarter Overtime hour
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the two regrassion line will pass through the point (x,y)
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