Mathematics

9th -

10thgrade

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10 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt

    . Mean of 20 observations is 17. If in the observations, observation 40 is replaced by 12, find the new mean

    15.6

    15.5

    17

    18

  • 2. Multiple Choice
    5 minutes
    1 pt

    Mean of 36 observations is 12. One observation 47 was misread as 74. Find the correct mean

    Answer.

    11.20

    11.25

    15

    16

  • 3. Multiple Choice
    5 minutes
    1 pt

    Determine the mean of first 10 natural numbers.

    5.5

    5.6

    10.5

    11.5

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