The formula to determine the number of classes given by Sturge's rule is which one of the following?
Where, $$K$$ = Number of classes
$$N$$ =Total number of observations
$$\left( {\log \,N} \right)$$ = Logarithm of the total number of observations
A. $$K = 1 + 3.322\left( {\log \,N} \right)$$
B. $$K = \left( {\log \,N} \right)1.322$$
C. $$K = \frac{{1 + 3.322}}{{\left( {\log \,N} \right)}}$$
D. $$K = \frac{{3.322}}{{\left( {\log \,N} \right) + 1}}$$
Answer: Option A
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