1. Measures of Central Tendency
Mean, Median, Mode, Range

2. MEAN 3.1 4 9 23 8.5 19 0.17 The average number in the set of data.
Add the numbers.
Divide the sum by the quantity of numbers in the set.

3. MEDIAN 3.1 4 9 23 8.5 19 0.17 The middle number in a set of data.
Put the numbers in numerical order.
Starting on the outside numbers, count inwards until you reach the middle number.

4. MODE
The number that occurs most frequently in a set of data.

5. RANGE
The difference between the highest and lowest number in a set of data.
Put the numbers in numerical order.
Subtract the lowest number from the highest number.

6. Find the mean, median, mode and range of the given data.

7. Find the mean, median, mode and range of the given data.
2.0
2.3
2.5
3.1
3.2
3.6
4.0
4.2
4.3
4.4
5.0
5.3
5.6
5.7
5.8
6.1
6.2
6.5
7.3
7.4
8.2
10.2
10.5