NCERT Book Class 11 Economics (Statistics for Economics) Chapter 5 Measures of Central Tendency

CHAPTER

Measures of Central Tendency

Studying this chapter should representation of the data. In this
enable you to: chapter, you will study the measures
• understand the need for of central tendency which is a
summarising a set of data by one numerical method to explain the data
single number; in brief. You can see examples of
• recognise and distinguish summarising a large set of data in
between the different types of day-to-day life, like average marks
averages;
obtained by students of a class in a test,
• learn to compute different types
of averages; average rainfall in an area, average
• draw meaningful conclusions production in a factory, average income
from a set of data; of persons living in a locality or
• develop an understanding of working in a firm, etc.
which type of average would be Baiju is a farmer. He grows food
the most useful in a particular grains in his land in a village called
situation. Balapur in Buxar district of Bihar. The
village consists of 50 small farmers.
Baiju has 1 acre of land. You are
1. INTRODUCTION
interested in knowing the economic
In the previous chapter, you have read condition of small farmers of Balapur.
about the tabular and graphic You want to compare the economic