When studying the effect of temperature on the sale of ice cream, a researcher records the number of ice cream cones sold on cold days versus those sold on hot days. in this case, the researcher would most likely compare to describe the results.

group mean

Explanation:

Group mean is the mean of grouped data. Grouped data are data formed by the summation of individual observations of a variable into groups, so that a frequency distribution of these groups makes it easy to summarize or analyze data.

The group data of the sales of ice cream on hot days is different for those on cold days. assuming you took a range of data for each for three months. you would be able to compare results after collecting the mean of each group of data collected

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail