Q 11

A frequency distribution is
A)a tabular summary of a set of data showing the fraction of items in each of several nonoverlapping classes
B)a graphical form of representing data
C)a tabular summary of a set of data showing the number of items in each of several nonoverlapping classes
D)a graphical device for presenting categorical data

Q 12

The sum of frequencies for all classes will always equal
A)1
B)the number of elements in a data set
C)the number of classes
D)a value between 0 and 1

Q 13

In constructing a frequency distribution, as the number of classes are decreased, the class width
A)decreases
B)remains unchanged
C)increases
D)can increase or decrease depending on the data values