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JEE MATHEMATICS MCQ: STATISTICS

1 Easy

1 of 1

Application +4 | -1

The two lines of regression are

8 x-10 y=66

and

40 x-18 y=214

and variance of

x

is 9 . The standard deviation of

y

series is

View answer and explanation

Correct option: C

4

Option A (

\frac{{b}}{{1-a}}

or

\frac{{\beta}}{{1-\alpha}}

) is correct because the mean of x and y series is found by solving the regression equations with the condition that the means are equal.

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