find the three m's of the data set.
15,16,21,23,25,25,25,39
The three M's of a data set typically refer to the Mean, Median, and Mode.
1. Mean: The average of the data set. Add up all the numbers and then divide by the number of values.
(15 + 16 + 21 + 23 + 25 + 25 + 25 + 39) ÷ 8 = 189 ÷ 8 = 23.625
Mean = 23.625
2. Median: The middle value when the data set is ordered from least to greatest. If there are an even number of values, the median is the average of the two middle values.
The data set is already ordered, so:
15, 16, 21, 23, 25, 25, 25, 39
With eight values, we need to find the average of the two middle values (21 and 23):
(21 + 23) ÷ 2 = 44 ÷ 2 = 22
Median = 22
3. Mode: The number that occurs most frequently in the data set.
In this data set, the number 25 appears three times, which is more frequent than any other number.
Mode = 25
So, the three M's of the data set are:
Mean: 23.625
Median: 22
Mode: 25