The following data, based on 450 students, are given for marks in Statistics and Economics at a certain examination. Mean marks in Statistics 40 Mean marks in Economics 48 S.D. of marks in Statistics 12 The variance of marks in Economics 256 Sum of the products of deviation of marks from their respective mean 42075 Give the equations of the two lines of regression and estimate the average marks in Economics of candidates who obtained 50 marks in Statistics.

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The following data, based on 450 students, are given for marks in
Statistics and Economics at a certain examination.
Mean marks in Statistics 40
Mean marks in Economics 48
S.D. of marks in Statistics 12
The variance of marks in Economics 256
Sum of the products of deviation of marks from their respective mean
42075 Give the equations of the two lines of regression and estimate
the average marks in Economics of candidates who obtained 50 marks
in Statistics.
Transcribed Image Text:The following data, based on 450 students, are given for marks in Statistics and Economics at a certain examination. Mean marks in Statistics 40 Mean marks in Economics 48 S.D. of marks in Statistics 12 The variance of marks in Economics 256 Sum of the products of deviation of marks from their respective mean 42075 Give the equations of the two lines of regression and estimate the average marks in Economics of candidates who obtained 50 marks in Statistics.
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