JEE MATHEMATICS MCQ: STATISTICS

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Application +4 | -1

Given the following frequency distribution with some missing frequencies.

\begin{array}{cccccccccccccccccccc} {{\text{Class}}}&{{\text{Frequency}}} \\ {10 - 20}&{180} \\ {20 - 30}&{ - - } \\ {30 - 40}&{34} \\ {40 - 50}&{180} \\ {50 - 60}&{136} \\ {60 - 70}&{ - - } \\ {70 - 80}&{50} \end{array}

If the total frequency is 685 and median is 42.6 then the missing frequencies are

View answer and explanation

Correct option: C

82, 23

Option C (82, 23) is correct because solving the equations for the total frequency and median yields these missing frequencies.

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