averages.poqs(文件已创建)
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| 1 | + | We've collected the following data points -- | |
| 2 | + | - {data point of #4} | |
| 3 | + | - {data point of #1} | |
| 4 | + | - {data point of #7} | |
| 5 | + | - {data point of #8} | |
| 6 | + | - {data point of #1} | |
| 7 | + | ||
| 8 | + | Let's find the average of these values. We've got a tally running, we | |
| 9 | + | should continue accumulating values -- | |
| 10 | + | ||
| 11 | + | : {there are $count data points} | |
| 12 | + | {data point of $x} {sum is $n} | |
| 13 | + | > | |
| 14 | + | {@add $count and #1 into &"there are * data points"} | |
| 15 | + | {@add $n and $x into &"sum is *"} : | |
| 16 | + | ||
| 17 | + | : {data point of $x} | |
| 18 | + | > | |
| 19 | + | {there are #1 data points} | |
| 20 | + | {sum is $x} : | |
| 21 | + | ||
| 22 | + | When we are out of data points to tabulate, we can finally compute the | |
| 23 | + | average -- | |
| 24 | + | ||
| 25 | + | : {there are $count data points} {sum is $sum} | |
| 26 | + | > | |
| 27 | + | {@divide $sum by $count into &"the average is *"} : | |
| 28 | + | ||
| 29 | + | Write out the finaly result to the console -- | |
| 30 | + | ||
| 31 | + | : {the average is $average} | |
| 32 | + | > | |
| 33 | + | {@write "The average is "} | |
| 34 | + | {@write $average} | |
| 35 | + | {@write ".\n"} : | |
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