If you have 256 data points, how many classes (bins) would sturges' rule suggest

Since Sturge's Rule states that the optimal number of bins is equal to the 1 plus 3.3 log(n), where n is the number of data points, the estimated solution (since you can only have whole bins) is to provide 6 bins, each storing 42 to 43 data points.

These are the multiples of 15 but what you are probably asking or what are the factors of 15

B. 16is the absolute value