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Statistics

Long Answer Type

481. The frequency distribution of population in males in different age groups is given below:
Calculate the mean deviation about the median.

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Short Answer Type

482. Find the mean and variance for the following data:
25, 50, 45, 30, 70, 42, 36, 48, 34, 50

118 Views

483. Find the mean and variance for the following data:
6, 7, 10, 12, 13, 4, 8, 12

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Long Answer Type

484. Find the mean and variance of the first n natural numbers.

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Short Answer Type

485. Find the variance and standard deviation of 3, 5, 5, 4, 6, 3, 5, 7,1, 8.

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486. Find the variance and standard deviation of 62,65, 57, 62, 56, 51, 69, 60.

115 Views

Long Answer Type

487. Find the mean and variance for the following data:

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488. The scores of 48 children in an intelligency test are shown in the following table:

Calculate: (a) Mean (b) Variance (c) Standard Deviation.

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489. Compute (a) the mean (b) the variance (c) the standard deviation of the following data:

Since the values of x are at equal intervals of 1, we shall use shortcut method in which
$straight u equals fraction numerator straight x minus straight A over denominator i end fraction space where italic space i equals 1$
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490. Calculate the mean and standard deviation for the following data:

119 Views