Final answer:
The correct statement is B. The middle 50 percent of the members lost from two to 8.5 lbs, as it likely refers to the interquartile range, a statistic that describes the middle 50 percent of a dataset.
Step-by-step explanation:
To determine which statement is correct regarding the weight loss of members, we need to look at the way the information is presented. Without a specific dataset, these statements would generally be part of a descriptive statistic analysis, often derived from a larger dataset regarding weight loss in a study or program
This statement likely refers to the interquartile range (IQR), which describes the middle 50 percent of a dataset. Whereas statements A and C provide specific quantities or ranges that only apply to portions of the group but not necessarily the middle 50 percent. Without actual data, it is impossible to confirm statements A and C, but statement B's reference to an IQR is the kind of statistic that would describe a middle proportion of a dataset irrespective of its specific numbers.