December 2020
Intermediate to advanced
369 pages
14h 24m
English
Content preview from Pearson IIT Foundation Mathematics Class 7, 8th Edition by Pearson
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Chapter 9
9.2
INTRODUCTION
The word ‘statistics’ is derived from the Latin word ‘status’ or the Italian word ‘status’ or the Greek
word ‘Statistic’ which means political state. Political states had to collect information about their
citizens to facilitate governance and to plan for development. Then, in course of time, statistics
evolved as a branch of mathematics, which deals with the collection, classication and analysis of
numerical data.
In this chapter, we shall learn about statistical graphs and measures of central tendency.
Data
The word data means information in the form of numerical gures or a set of given facts.
For example, the percentage of marks scored b ...
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