11th Math Statistics MCQ Chapter Quiz: Check knowledge with instant result

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Time: 10 Minutes for 10 Question.

11th Math: Statistics

1 / 10

1. The variance of 20 observations is 5. If each observation is multiplied by 2, find the new variance of the resulting observations.

None

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2 / 10

2. The mean of 5 observations is 4.4 and their variance is 8.24. If three of the observations are 1, 2 and 6, find the other two observations.

1 and 9

4 and 5

4 and 9

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3 / 10

3. $11th math$

10.16

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4 / 10

4. $11th math$

3.12

6.12

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5 / 10

5. Calculate the mean deviation about the median for the provided dataset: 3, 9, 5, 3, 12, 10, 18, 4, 7, 19, 21.

5.27

4.27

7.25

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6 / 10

6. Which of the following options represents the mean deviation about the mean for the given data set: 6, 7, 10, 12, 13, 4, 8, 12?

2.75

2.5

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7 / 10

7. $11th math$

7.77

5.77

6.77

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8 / 10

8. The mean and standard deviation of 100 observations were calculated as 40 and 5.1, respectively by a student who took by mistake 50 instead of 40 for one observation. Select correct standard deviation?

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9 / 10

9. $11th math$

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10 / 10

10. The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the new mean and new standard deviation of the resulting observations.

6, 12

24, 12

24, 48

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