Calculate the number of classes if there are 130 observations in a data set.
A) 8
B) 7
C) 6
D) 5
E) 4

Name: Calculate the number of classes if there are 130 observations in a data set. A) 8 B) 7 C) 6 D) 5 E) 4
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Quizplus · Accepted Answer

The number of classes can be calculated using Sturges' formula: k = 1 + 3.322 * log10(n), where n is the number of observations. For 130 observations, k ≈ 1 + 3.322 * log10(130) ≈ 8.

Calculate the Number of Classes If There Are 130 Observations