Mca 6th semester solved assignments plus SMU?

Answer 1

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Q.2 (b) In a sample of 120 workers in a factory, the mean and standard deviation of wages
were Rs. 11.35 and Rs.3.03 respectively. Find the percentage of workers getting wages
between Rs.9 and Rs.17 in the whole factory assuming that the wages are normally
distributed. Q.4 (b) Calculate Karl Pearson's coefficient of correlation between X series and Y series.
X 110 120 130 120 140 135 155 160 165 155
Y 12 18 20 15 25 30 35 20 25 10 Q.6 Construct Fisher's Ideal Index for the given information and check whether Fisher's
formula satisfies Time Reversal and Factor Reversal Tests.