Predicted percentage between 40 and 70: The predicted amount of data of students

Question

Predicted percentage between 40 and 70: The predicted amount of data of students drive between 40 and 70 miles to school is 43.9%. ________ Actual percentage: The actual percentage of data of students that drive between 40 and 70 miles is 22.9%. ________ Predicted percentage more than 70 miles: The predicted percentage of those student who drive more than 70 miles is 23.0%. ________ Actual percentage: The actual percentage of those students who drive more than 70 miles to school is 37.1%. ________ Comparison_ In comparison with predicted and actual percentage of those students driving between 40 and 70 miles to school there was a 21.0% error. In comparing the predicted percentage of those students driving more than 70 miles to school and the actual percentage of those students driving more than 70 miles to school is 14.1% error. ________

Explanation / Answer

Predicted percentage between 40 and 70 : 0.439271

Actual percentage: 0.228571

Predicted percentage more than 70 miles : 0.230479

Actual percentage : 0.382353

Comparison: Again, in this case, the predicted was a little off. About 21% on the between 40 and 70 case and 15% on the greater than 70 case.

Why: The reason is that we had only 35 data points, as the amount of data increases, the actual percentage should get closer to the predicted percentage.

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