Frequency distribution and histograms
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Intros
Examples
Lessons
- Constructing Frequency Distribution Table and Histograms
Listed below are the heights of a class of graders:
119
116
120
134
119
117
115
122
125
124
128
122
135
126
135
120
112
119
115
124
120
117
123
140
125
130
113
128
125
115
131
122
120
138
116
- Construct a frequency distribution table based on the data set above with the following information:
1) class (set class width as 4 and lower limits of the classes as multiples of 4)
2) frequency
3) relative frequency
4) cumulative frequency
- From the frequency distribution table in the previous part, construct a histogram. Use class midpoints on -axis and frequency on -axis.
- Construct a frequency distribution table based on the data set above with the following information:
- Interpreting Histograms
Answer the questions based on the histogram below.
- The histogram below shows the average daily cholesterol intake of 40 people.
- What will change in the histogram if class midpoints are used on -axis?
- What will change in the histogram if relative frequency is used on -axis?
- What will change in the histogram if cumulative frequency is used on -axis?
- What kind of interpretations can be made from the cumulative frequency histogram?