Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 1

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Mean is the middle-most observation of a statistical data.

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Important Questions on Statistics

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 2

We can obtain mode graphically.

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 3

The empirical relationship between mean, median and mode is given by $Mode = 3 Median - 2 Mean$ .

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 4

In a grouped distribution, the class with largest frequency is called as modal class.

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 5

Mean, mode and median of a data can never be equal.

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 6

An ogive is almost the same as frequency polygon.

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 7

Median

= l + \frac{(\frac{N}{2} - C) \times h}{f}

is a valid formula for calculating the median of grouped data with equal size.

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 8

Formula for finding mode of a grouped is given by

l = (\frac{f_{1} - f_{2}}{2 f_{2} - f_{0} - f_{1}}) \times h

whose symbols have usual meanings.

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Modern's abc+ of Mathematics for Class 10>Chapter 14 - Statistics>FOR ASSESSMENT>Q 9

We cannot find the median of data graphically without drawing both 'less than' and 'more than' ogives on the same graph paper.