1. Statistics in Science

2. Topic Introduction
Mean
Mode
Median

3. Mean Mode Median Topic Introduction
is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
Mode
is the value that occurs most frequently.
is the "middle number" (in a sorted list of numbers).
Median

4. The Mean

5. The Mean The MEAN is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are.

6. The Mean
The MEAN is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are. 2 2 3 2 1 2 = 12
EXAMPLE

7. The Mean
The MEAN is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are. 2 2 3 2 1 2 = 12 /6
EXAMPLE

8. 2 = Mean The Mean EXAMPLE The MEAN is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
Mean = 2
EXAMPLE

9. The Median

10. The Median The MIDDLE one
The MEDIAN is the "middle number" (in a sorted list of numbers).

11. 2 2 3 2 1 2 The Median EXAMPLE The MIDDLE one
The MEDIAN is the "middle number" (in a sorted list of numbers). 2 2 3 2 1 2
EXAMPLE

12. Star Tip : Add the two up and divide by two
The Median
The MIDDLE one
The MEDIAN is the "middle number" (in a sorted list of numbers).
Star Tip : Add the two up and divide by two 2 2 3 2 1 2
EXAMPLE

13. The Mode

14. The Mode The MODE one – The most common number.
The MODE is the value that occurs most frequently.
It is easy to calculate: put the numbers in ascending order, and find the most common number.

15. 1 2 2 2 2 3 The Mode EXAMPLE The MODE one – The most common number.
The MODE is the value that occurs most frequently.
It is easy to calculate: put the numbers in ascending order, and find the most common number. 1 2 2 2 2 3
EXAMPLE

16. A set of data is bimodal if it has 2 modes
The Mode
The MODE one – The most common number.
The MODE is the value that occurs most frequently.
It is easy to calculate: put the numbers in ascending order, and find the most common number.
Bimodal
A set of data is bimodal if it has 2 modes 1 2 2 3 4 4
EXAMPLE