Dear candidates you will find MCQ questions of 11th Class - Math | Chapter: Statistics here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
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Q. The sum of 10 items is 12 and the sum of their squares is 18. The standard deviation is
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Q. The algebraic sum of the deviation of 20 observations measured from 30 is 2. So, the mean of observations is
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Q. The coefficient of variation is computed by
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Q. When tested the lives (in hours) of 5 bulbs were noted as follows: 1357, 1090, 1666, 1494, 1623. The mean of the lives of 5 bulbs is
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Q. If mode of a series exceeds its mean by 12, then mode exceeds the median by
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Q. The median and SD of a distributed are 20 and 4 respectively. If each item is increased by 2, the new median and SD are
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Q. Range of the data 4, 7, 8, 9, 10, 12, 13 and 17 is
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Q. If Mean = Median = Mode, then it is
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Q. If the difference of mode and median of a data is 24, then the difference of median and mean is
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Q. If r is the correlation coefficient, then
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Q. If the varience of the data is 121 then the standard deviation of the data is
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Q. If the mean of the following data is 20.6, then the value of p is x = 10 15 p 25 35 f = 3 10 25 7 5
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Q. If the mean of first n natural numbers is 5n/9, then n =
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Q. If one of the observation is zero then geometric mean is
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Q. Which one is measure of dispersion method
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Q. If a variable takes discrete values x + 4, x – 7/2, x – 5/2, x – 3, x – 2, x + 1/2, x – 1/2, x + 5 (x > 0), then the median is
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Q. If covariance between two variables is 0, then the correlation coefficient between them is
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Q. The mean of a group of 100 observations was found to be 20. Later on, it was found that three observations were incorrect, which was recorded as 21, 21 and 18. Then the mean if the incorrect observations are omitted is
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Q. Varience is independent of change of
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Q. Let x1, x2, x3, ……… , xn, be n observations and X be the arithmetic mean. Then formula for the standard deviation is given by
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