It may be easier to calculate the mean, median, and mode if you rearrange the numbers first.
Mean = 747.5
Median = 708
Mode = 627
Practice makes perfect
The first thing that should be done when finding the key features of a data set is rearranging the numbers from least to greatest.
627, 627, 643, 697, 719, 731, 948, 988
Let's proceed to finding the mean, median, and mode.
Mean
The mean of a data set is calculated by finding the sum of all values in the set and then dividing by the number of values. In this case, there are 8 values.
To identify the median, we observe the middle value.
627, 627, 643, 697 | 719, 731, 948, 988
Dangit! There is no middle value. When this happens, we need to calculate the median by finding the average of the two values closest to the middle. When arranged from least to greatest, 697 and 719 are the most central values.
Median=697+ 719/2= 708
Mode
The mode of a data set is the value that occurs most frequently.
627, 627, 643, 697, 719, 731, 948, 988
We can see that 627 occurs more frequently than any other value in the set, so this is the mode.
