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Mathematics, 08.06.2021 14:20 springcoates
Q2: “If the coefficient of correlation between two variables is zero, it does not mean that the
variables are unrelated”. Comment. Find Karl Pearson’s correlation coefficient between age
and playing habits of the following students:
Age (Years) 15 16 17 18 19 20
No. of Students 250 200 150 120 100 80
Regular Players 200 150 90 48 30 12
Also calculate the probable error and point out if coefficient of correlation is significant.
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Q2: “If the coefficient of correlation between two variables is zero, it does not mean that the
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