That answer was wrong by
a. -.04
b. -.4
c. -4
d. .4
2006-10-14 03:11:00 · 7 answers · asked by Tony R 1 in Science & Mathematics ➔ Mathematics
70+59+72+35+67+78+68+81+80+76 = 686
686 / 10 = 68.6
So the student's average is 0.4 too HIGH, so I would say that (d) is the correct answer.
2006-10-14 03:14:53 · answer #1 · answered by Ted 4 · 0⤊ 0⤋
d. 0.4
(Average of the data given:
70+59+72+35+67+78+68+81+80+76) divided by 10
Average of the data given
=686/10
=68.6 is the average.
A student wrote 69 which is wrong as actual is 68.
So, the answer is wrong by (69-68.6)=0.4
Imean he had calculated 0.4 more than the actual average.)
2006-10-14 04:28:57 · answer #2 · answered by Anonymous · 0⤊ 0⤋
70+59+72+35+67+78+68+81+80+76= 686
686/10
The correct average is 68.6
The student's average of 69 minus the correct average of 68.6 is 0.4, equal to d) .4
2006-10-14 03:47:10 · answer #3 · answered by spens 2 · 0⤊ 0⤋
right answer is 68.6 so 69 is off by +0.4 d
2006-10-16 13:33:38 · answer #4 · answered by yupchagee 7 · 0⤊ 0⤋
686/10=68.6 so its d
2006-10-14 03:19:14 · answer #5 · answered by manu_smartdude 2 · 0⤊ 0⤋
b
2006-10-14 03:16:21 · answer #6 · answered by openpsychy 6 · 0⤊ 0⤋
d. 0.4
2006-10-14 03:13:37 · answer #7 · answered by Anonymous · 0⤊ 0⤋