Statistics and Probability: JEE Main 2023 Mathematics question

JEE Main 2023 · 10 Apr, Morning shift · Q52

JEE Main 202310 Apr, Morning shiftMathematicsMediumStatistics and Probability258× since 2002

If the mean of the frequency distribution Class : | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 Frequency : | 2 | 3 |

x

| 5 | 4 is 28, then its variance is __________.

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2023 · 10 Apr, Morning shift · Q52

JEE Main 202310 Apr, Morning shiftMathematicsMediumStatistics and Probability258× since 2002

If the mean of the frequency distribution Class : | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 Frequency : | 2 | 3 |

x

| 5 | 4 is 28, then its variance is __________.

Your answerType your answer. Integers and decimals are accepted.

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