Chapter Review
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Start by making a frequency table.
To draw a histogram, we will start by making a frequency table.
The minimum value is 121 and the maximum is 169. In this case, intervals of 10 seem reasonable. Let's list the intervals in the first column of our frequency table.
Interval | Frequency |
---|---|
120 - 129 | |
130 - 139 | |
140 - 149 | |
150 - 159 | |
160 - 169 |
Now, let's count the number of values in each interval. 141, 128, 132, 141, 152, 169, 121, 133, 131, 156, 142, 136, 135, 144, 135, 153 Looking at the data, we can see that there are 2 values in the first interval, 6 values in the second interval, 4 values in the third interval, 3 values in the fourth interval, and 1 value in the fifth interval. Now we can complete the second column of our table.
Interval | Frequency |
---|---|
120 - 129 | 2 |
130 - 139 | 6 |
140 - 149 | 4 |
150 - 159 | 3 |
160 - 169 | 1 |