3a - 1 = 12
+1 +1
—————-
3a = 13
—- ——
3 3
—————
A=4 1/3
90/2 = 45
45/1700 = 0.02647
0.02647 x 100 = 2.64
2.46%
There’s no question or problem to this
7,15,19,34 are not multiples of four. to find this answer out just divide four into them.
The scores of two groups can be compared using coefficient of variation;
Coefficient of variation (C.V.) = (Standard Deviation/ Mean) × 100%;
For Data set 1;
Standard deviation = 3.6
Mean = 35.3
C.V. = (3.6/35.3) × 100%;
= 10.19%
For Data set 2;
Standard deviation = 0.5
Mean = 34.1
C.V. = (0.5/34.1) × 100%;
= 1.46%
To learn more about coefficient of variation, visit: brainly.com/question/24131744
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