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A less than table shows the number of players with a score below each limit…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A less than table shows the number of players with a score below each limit.
| Score less than | Players |
|---|---|
| 20 | 8 |
| 40 | 26 |
| 60 | 51 |
| 80 | 69 |
| 100 | 75 |
Find the frequency of the class to , and the more than cumulative frequency at and at .
Need a reminder? The key ideaShow
The less than cumulative frequency of a limit counts the values below it and is plotted at the upper limit. The more than cumulative frequency counts the values above it and is plotted at the lower limit. At every limit, less than plus more than equals . The curves cross at the height , and the horizontal reading is the median.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The class to . players.
Step 2. The total. There are players, because the less than total at is .
Step 3. More than . .
Step 4. More than . .
Answer: the frequency of to is , and players scored more than , and players scored more than .
Check. The class to has players, which agrees with the more than total at .
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