JEE Main Maths · Statistics

Variance of Discrete Frequency Distribution

Variance of Discrete Frequency Distribution (Statistics) was asked 2 times in 2 JEE Main shifts, 2024, out of the 42 shifts Lumi analysed. 1 of the 2 had a numerical answer.

Times asked: 2; in 2 shifts
Years: 2024
Usual format: Numerical value; Calculation
Pattern: New since 2024; repeats across shifts

How it is asked

Variance of frequency table
Find unknown data from variance

Difficulty

Easy 1Medium 1Hard 0

Where it sits

Chapter: Statistics. Topic: Variance and SD, 27 questions over 10 ideas.

All 2 questions

Newest first, each with its options and official answer.

9 Apr 2024, Shift 2 · Q19If the variance of the frequency distribution | $x$ | $c$ | $2c$ | $3c$ | $4c$ | $5c$ | $6c$ | |---|---|---|---|---|---|---| | $f$ | 2 | 1…MediumSingle correct
30 Jan 2024, Shift 2 · Q30The variance $\sigma^2$ of the data | $x_i$ | 0 | 1 | 5 | 6 | 10 | 12 | 17 | |---|---|---|---|---|---|---|---| | $f_i$ | 3 | 2 | 3 | 2 | 6…EasyNumerical value