2.1. Histograms and Frequency Distributions http://www.ck12.org
(b)
Student answers may vary if they choose a different bin width for their histogram.
(c) This data set does appear to be have some characteristics of being skewed right. There also appears to be two
distinct mounds. This shape is called “bimodal”.
- (a)
TABLE2.15:
Class Frequency Relative
Frequency(%)Cumulative
FrequencyRelative
Cumulative
Frequency(%)
[ 0 − 25 ) 7 50 7 50
[ 25 − 50 ) 1 7. 1 8 57. 1
[ 50 − 75 ) 3 21. 4 11 78. 6
[ 75 − 100 ) 1 7. 1 12 85. 7
[ 100 − 125 ) 1 7. 1 13 92. 9
[ 125 − 150 ) 0 0 13 92. 9
[ 150 − 175 ) 0 0 13 92. 9
[ 175 − 200 ) 0 0 13 92. 9
[ 200 − 225 ) 1 7. 1 14 100(b)