2. Calculate Karl Pearson's Coefficient of correlation from the following data. (2.5 marks) X 10 12 13 15 17 18 19 20 21 22 Y 20 22 21 24 23 25 20 16 20 18 3. Following is the data on the performance of two batsmen from 10 Cricket Test Match series. Scores of Batman 1 Score of Batman 2 44 42 40 55 78 66 35 58 59 67 63 75 78 74 10 59 18 49 66 57 Find out which batsman is more consistent in performance using co efficient of variation. 4. (2.5 marks) Find the equation of the regression line from the following data. Price of a 1 3 5 7 9 13 15 Commodity in RO Demand for 55 48 36 28 24 18 12 the Commodity If the price of the commodity increases to 17, what would be the demand for the commodity