(i. A table showing the number of observations that have been grouped into each of several classes is called a frequency distribution. (ii) When classes in a frequency table are constructed so that data will fit into only one category, it is called a relative class frequency.
(iii) The suggested class interval based on number of observations given the data ranges from 100 to 200 with 50 observations is 50.
A) (i), (ii) and (iii) are all correct statements.
B) (i), (ii) and (iii) are all false statements.
C) (i) and (iii) are correct statements but not (ii).
D) (i) is a correct statement but not (ii) or (iii).

Question

Quizplus · Accepted Answer

(i) is correct as it accurately describes a frequency distribution. (ii) is incorrect because it describes mutually exclusive classes, not relative class frequency, which refers to the proportion of observations in each class. (iii) is incorrect because the suggested class interval does not directly follow from the information given; it requires a method like Sturges' formula or another rationale for determining class width.

(I a Table Showing the Number of Observations That Have