Using Sturges Rule how many bins should you use if you have

Using Sturges\' Rule how many bins should you use if you have 581 observations with a range of 18?
(Round to the nearest whole number)

Solution

number of bins according to Sturges\' Rule = 1+3.322*log₁₀(n)

where n = total number of observations

so in this case number of bins = 1+3.322*log₁₀(581)

= 1+3.322 * 2.764176

= 1+ 9.183146

= 10.183146

which is nearly equal to 10

Thus 10 bins should be chosen.