JEE MATHEMATICS MCQ: STATISTICS

1 Easy

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Application +4 | -1

For observation set

x

data obtained is

x_i=\{11,12,13, \ldots 41\}

For another observation set

y

data obtained is

y_i=\{61,62,63, \ldots 91\}

Then value of

\bar{x}+\bar{y}+\sigma^2

where

\bar{x}, \bar{y}

are means of respective data set while

\sigma^2

is variance of combined data is

View answer and explanation

Correct option: C

807

Option C (807) is correct because it is the sum of the means of the two data sets and the variance of the combined data set, calculated using statistical formulas.

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