TRANSFORMATION TEST FOR CORRELATION COEFFICIENT

TEST BASED ON FISHER’S Z - TRANSFORMATION TEST FOR CORRELATION COEFFICIENT Exercise 1: The correlation coefficient between marks in Statistics Hons. In college test and those in the subsequent University examinations, for 29 students, was found to be 0.72 a) find out if, this differs significantly from ? = 8.0 b) obtain 95% confidence limits for ? in the light of the information provided by the sample. TEST FOR DIFFERENCE BETWEEN TWO INDEPENDENT CORRELATION COEFFICIENT Exercise 2: The correlation coefficient between head-length and head-breadth is 0.324 for 90 Brahmins and is 0.278 for 130 Chattris. Test whether the two values differ significantly at 5% level. TEST BASED ON F -DISTRIBUTION TEST FOR RATIO OF TWO POPULATION VARIANCE CONFIDENCE LIMIT FOR (Sigma Square 1 / Sigma Square 2) TEST FOR MULTIPLE CORRELATION COEFFICIENT Exercise 3: From a sample of 30 sets of values from a normal population 1(2 )3 r is found to be 0.5, test the hypothesis that 0 ? 1(2 )3 = at 5% level. TEST FOR EQUALITY OF MORE THAN TWO MEANS