1. Averages
Handling Data

2. To find the Mean, Median, Mode and Range of a given set of data.
Aims
To find the Mean, Median, Mode and Range of a given set of data.

3. Hey diddle diddle, the median’s in the MIDDLE you ADD and DIVIDE for the mean the mode is the MOST and the range is the DIFFERENCE between

4. Mean
To find the mean you add all the numbers together and divide by how many numbers there are
Find the mean of the following:
3, 6, 1, 4, 5, 5

5. Mean
To find the mean you add all the numbers together and divide by how many numbers there are
Find the mean of the following:
3, 6, 1, 4, 5, 5
= 24
24 / 6 = 4

6. Mode The mode is the number that occurs the most
Find the mode of the following:
2, 3, 4, 5, 3, 4, 5, 3, 2, 6, 2, 3, 7, 3, 9, 3

7. Mode The mode is the number that occurs the most
Find the mode of the following:
2, 3, 4, 5, 3, 4, 5, 3, 2, 6, 2, 3, 7, 3, 9, 3
Mode = 3

8. Median The median is the middle number of an ordered set of data
Find the median of the following:
4, 3, 6, 7, 4, 5, 2, 3, 2

9. Median The median is the middle number of an ordered set of data
Find the median of the following:
4, 3, 6, 7, 4, 5, 2, 3, 2
Order them:
2, 2, 3, 3, 4, 4, 5, 6, 7
Median = 4

10. Range
The range is the difference between the largest number and the smallest number
Find the range of the following data:
12, 45, 66, 23, 34, 55, 11

11. Range
The range is the difference between the largest number and the smallest number
Find the range of the following data:
12, 45, 66, 23, 34, 55, 11
Range = 66 – 11
Range = 5

12. Page 271 Q1 – Q7

13. Plenary
Find the mean, median mode and range of the following set of data
9, 10, 13, 8, 10 .

14. Plenary
Find the mean, median mode and range of the following set of data
9, 10, 13, 8, 10
Answers:
Mean = 10
Median = 10
Mode = 10
Range = 5