Is it necessary to flow traffic rules? Why?
1 answer:
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Please find attached the figure with the complete question including the histogram
Answer:
Explanation:
You must understand the <em>histogram.</em>
The horizontal axis shows the <em>weights in pounds</em> measured using the central points of the intervals. The intervals are supposed to be [105,115], [115,125], [125,130], . . .
The height of the bars represents the frequencies or number of <em>members </em>for each interval. You can read the height of each bar on the vertical axis.
Thus, you find the number of members for each interval:
- first interval: 5 members
- second interval: 4 members
- third interval: 2 members
- fourth interval (blank): 0 members
- fifth interval: 5 members
- sixth interval (blank): 0 members
- seventh interval: 4 members
Total: 5 + 4 + 2 + 0 + 5 + 0 + 4 = 20 members ← answer
