The coefficient of variation is the square of the correlation coefficient, and it measures what % of variations in one variable can be explained by variations in the other variable.

I do explain this in my free lectures – did you watch the lectures before attempting the test?

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AnoTae says

Good day madam/sir

Can you please explain me question #3?

John Moffat says

The coefficient of variation is the square of the correlation coefficient, and it measures what % of variations in one variable can be explained by variations in the other variable.

I do explain this in my free lectures – did you watch the lectures before attempting the test?

mariamohi says

100% 馃檪

Gabriel says

Question #5 for the high low method, the highest level is 75000 not 74000. If 74000 is being used, can you kindly explain why.

thank you.

John Moffat says

We use the highest and lowest of the independent variable which here is the production units. I do explain this in my free lecture.

Gabriel says

Good Day Sir,

can you kindly elaborate a little more on question #2.

John Moffat says

But what do you want me to elaborate? As the answer says, the coefficient must lie between +1 and -1 (which 1.4 does not).

Again, I explain this in my free lectures – did you not watch the lectures before attempting the test?