The following data, based or 450 students, are given for marks in Statistics and Eco- nomics at a certain examination. Mean marks in Statistics Mean marks in Economics S.D. of marks in Statistics The variance of marks in Economics 40 48 12 256 Sum of the products of deviations of marks from the 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 or: 450 students, are given for marks in Statistics and Eco-
nomics at a certain examination.
Mean marks in Statistics
Mean marks in Economics
S.D. of marks in Statistics
The variance of marks in Economics
40
48
12
256
Sum of the products of deviations of marks from the 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 or: 450 students, are given for marks in Statistics and Eco- nomics at a certain examination. Mean marks in Statistics Mean marks in Economics S.D. of marks in Statistics The variance of marks in Economics 40 48 12 256 Sum of the products of deviations of marks from the 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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