A recent survey determined the IQ score of a random selection of residents of Alaska. The accompanying relative frequency distribution table summarizes the results.
Identify the class width for the given relative frequency distribution.
IQ Score
Relative Frequency
50–69
5%
70–89
23%
90–109
46%
110–129
19%
130–149
7%
(1 point)
19
20
19.5
2 answers
The “class width” is the distance between the lower limits of consecutive classes.
20
1 answer