It may be easier to calculate the median, and the mode if you rearrange the numbers first.
Mean: 112.3 Median: 95 Mode: None.
Practice makes perfect
The first thing that should be done when finding the key features of a data set is rearranging the numbers from the least to greatest.
43, 65, 68, 75, 95, 120, 140, 180, 225
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 the set. In this case, there are 9 values in the set.
To identify the median, we observe the middle value.
43, 65, 68, 75, 95, 120, 140, 180, 225
We can see that the middle value in this set is 95, so this is our median.
Mode
The mode of a data set is the value that occurs more frequently than other values.
43, 65, 68, 75, 95, 120, 140, 180, 225
In this set, each data value occurs only once. Therefore, there is no mode.
