# Statistics - NCERT Class 9 Maths

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The chapter 14 begins with the collection of data followed by the presentation of data. The focus then shifts to the graphical representation of data which includes bar graph, histograms and frequency polygons with various kinds of examples. We next see the three measures of central tendency for ungrouped data which includes mean, median and mode with a set of examples.

## Exercise 14.1

## Exercise 14.2

## Exercise 14.3

## Exercise 14.4

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