Question

Kofi estimated that he would run a total of 10 km in 1 h. In 1 h, he actually ran 46 times around a track 0.25 km long, going a total distance of 11.5 km.

What was the percent error in Kofi’s estimate? Round to the nearest tenth of a percent, if necessary.


A.
1.5%

B.
5%

C.
13%

D.
23%

Answer 1

@iGreen

Answer 2

(Observed - Expected)/Expected

Go!

Answer 3

Um?

Answer 4

^

Answer 5

13

Answer 6

(10-46)/46

like that? @tkhunny

Answer 7

Strangely worded, actually. I was reading, "Percent error from the estimate"

Estimate: 10
Actual; 11.5

Error: 10 - 11.5 = -1.5
% Error: -1.5/11.5 = 0.130434783 = 13.04%

See how that works? Don't be fooled by the 46.

Answer 8

ok thanx