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

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2. 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?

3. 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.

4. 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.

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6. Find the variance of the following data: 6, 8, 10, 12, 14, 16, 18, 20, 22, 24

7. 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?

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

9. The mean and variance of eight observations are 9 and 9.25, respectively. If six of the observations are 6, 7, 10, 12, 12 and 13, find the remaining two observations.

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