A researcher reports that, on average, the participants in his study lost 10.4 l

Question

A researcher reports that, on average, the participants in his study lost 10.4 lbs after two months on his new diet. A friend of yours comments that she tried the diet for two months and lost no weight, so clearly the report must be a fraud. Which of the following statements is correct? (Points : 1) Your friend must not have followed the diet correctly because she did not lose weight. Because your friend did not lose weight, the report must not be correct. The report gives only the average. This does not imply that all participants in the study lost 10.4 lbs or even that all participants lost weight. Your friend’s experience does not necessarily contradict the study results. In order for the study to be correct, we must now add your friend’s results to those of the study and recompute the new average.

Explanation / Answer

The report gives only the average. This does not imply that all participants in the study lost 10.4 lbs or even that all participants lost weight.

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