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Chapter 11: Q.9 (page 654)

A teacher predict that the distribution of grades on the final exam will be and they are recorded in table 11.27

The actual distribution for a class of 20 is in table 11.28

df=----

Short Answer

Expert verified

df=3

Step by step solution

01

Given Information

Given tables are

we have to determine the degree of freedom.

02

Explanation

The formula of degree of freedom is

df=n-1

where nis number of cells

df=n-1=4-1=3

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