Data set M and data set N each consist of 40 values. The table shows the frequencies for the values for each data set. Which of the following statements best compares the means of the two data sets?
| Value | Data set M frequency | Data set N frequency |
|---|---|---|
| 50 | 8 | 15 |
| 60 | 12 | 10 |
| 70 | 10 | 8 |
| 80 | 7 | 4 |
| 90 | 3 | 3 |
The mean of data set M is greater than the mean of data set N.
The mean of data set N is greater than the mean of data set M.
The mean of data set M is equal to the mean of data set N.
There is not enough information to compare the means of the data sets.
