The variance $\sigma^2$ of the data | $x_i$ | 0 | 1 | 5 | 6 | 10 | 12 | 17 | |---|---|---|---|---|---|---|---| | $f_i$ | 3 | 2 | 3 | 2 | 6 | 3 | 3 | is ________.

JEE Main 2024 · MathsNumerical answerNumerical valueEasyCalculation

JEE Main 30 January 2024, Shift 2, Maths Q30

Question 30 of 90 in this shift, Maths question 30 of 30, Section B.

The variance

\sigma^2

of the data

$x_i$	0	1	5	6	10	12	17
$f_i$	3	2	3	2	6	3	3

is ________.

Official answer

NTA final key.

Chapter: Statistics
Topic: Variance and SD
Idea tested: Variance of Discrete Frequency Distribution

Same idea in other shifts

Asked 2× in all

9 Apr 2024, Shift 2 · Q19If the variance of the frequency distribution | $x$ | $c$ | $2c$ | $3c$ | $4c$ | $5c$ | $6c$ | |---|---|---|---|---|---|---| | $f$ | 2 | 1…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.