Answer:
A.The modes differ by 40 and the ranges differ by 40.
Step-by-step explanation:
The mode of a data set is the value that occurs most often.
For the data from last summer, the value 190 is in the list twice, while all other values are only in once. This means 190 is the mode.
For the data from this summer, the value 150 is in the list twice, while all other values are only in once. This means 150 is the mode. This also means the difference in modes is 190-150 = 40.
The range is the difference between the maximum and minimum values in a data set. For last summer's data, the maximum is 220 and the minimum is 140; this gives us 220-140 = 80 for the range.
For this summer's data, the maximum is 190 and the minimum is 150; this gives us 190-150 = 40 for the range. This means the difference in ranges is 80-40 = 40.
