Question

The Struges rule for determining the number of classes ($n$) in a frequency distribution with total frequency $N$ is

• A. $n=1+2.3\log N$
• B. $N=1+3.3\log n$
• C. $n=1+3.322\log N$
• D. $n=1-3.3\log N$

Answer 1

Answer: (C)

$n=1+3.322\log N$

No of classes is $n$

$Totalfrequency$ is $N$

Then we know that by $sturge{e}^{\prime }srule$

$n=1+3.322{\log }_{10}N$