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JEE MATHEMATICS MCQ: STATISTICS

1 Easy

1 of 1

Application +4 | -1

If

x

and

y

are deviations from arithmetic mean,

r=0.8

 

\Sigma x y=60, \sigma_y=2.5

and

\Sigma x^2=90

, then the number of items in the series, is

View answer and explanation

Correct option: A

10

Option A (10) is correct because the number of items is calculated using the correlation coefficient, covariance, and standard deviations.

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