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A set of data has 50 observations. How many classes would you recommend?​

1 Answer

6 votes

Answer:

  • 6 classes

Explanation:

If k is the number of classes and n is the number of observations, then for number of classes we should select the smallest k such that 2^k > n.

We have n = 50 and:

  • 2^5 = 32 < 50
  • 2^6 = 64 > 50

As per above described 2 to k rule, we are taking k = 6.

So 6 classes should be used.

User Paul Boddington
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