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Class 9

MATHS

STATISTICS

Updated On: 24-10-2020

Answer

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Answer

20

Why statistics ?

Statistics in plural sense

Statistical Data : Primary Data and Secondary Data.

Definition of Presentation Of Data

Arrangement Of Raw Data (i) Alphabetical order (ii) Ascending order (iii) Descending order

Ungrouped Data

Frequency Distribution

Classes or Class Intervals

Discrete frequency distribution

Continuous or Grouped Frequency Distribution - (a) Exclusive Method

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