Answer:
The coefficient of variation for choice A is 0.364. For choice B, it is 0.484. For choice C, it is 0.450.
Step-by-step explanation:
Coefficient of variation (CV) measures the dispersion of of data points around the mean. It is calculated as the ratio of the standard deviation to the expected value.
Coefficient of variation = Standard Deviation / Expected Value
We can, therefore, apply the above formula to the three choices given in the question: A, B and C. The calculations are as follows.
Coefficient of variation for choice A = 900 / 2470 = 0.364
Coefficient of variation for choice B = 1400 / 2890 = 0.484
Coefficient of variation for choice C = 770 / 1710 = 0.450