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# Calculating the mean, median and mode

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### Calculating the mean, median and mode

1. 1. Calculating the mean, median and mode.<br />
2. 2. Calculating the mean (average score)<br />Max, Hayley, Ray and Yasmin have some chocolates.<br />Hayley <br />Ray<br />Yasmin<br />Max<br />
3. 3. Calculating the mean (average score)<br />If the chocolates are to be shared equally amongst them, how many will they each have?<br />How do you work this out?<br />
4. 4. Calculating the mean (average score)<br />If the chocolates are to be shared equally amongst them, how many will they each have?<br />How do you work this out?<br />Add up all the numbers.<br />
5. 5. Calculating the mean (average score)<br />If the chocolates are to be shared equally amongst them, how many will they each have?<br />How do you work this out?<br />Add up all the numbers.<br />Divide this total by the number of scores you added up.<br />
6. 6. Calculating the mean (average score)<br />Now to find the mean of 10,12,8,9 and 11.<br />
7. 7. Calculating the mean (average score)<br />Work this out by adding <br />10+12+8+9+11=<br />
8. 8. Calculating the mean (average score)<br />Work this out by adding <br />10+12+8+9+11= 50<br />
9. 9. Calculating the mean (average score)<br />There are 5 scores, so <br />50 divided by 5 =<br />
10. 10. Calculating the mean (average score)<br />There are 5 scores, so <br />50 divided by 5 =<br />10<br />
11. 11. Calculating the median (middle score)<br />To find the median for the following list of scores<br />20,13,6,17,9,8,10,12,5.<br />
12. 12. Calculating the median (middle score)<br />To find the median for the following list of scores<br />20,13,6,17,9,8,10,12,5.<br />The first thing to do list the scores in order<br />
13. 13. Calculating the median (middle score)<br />To find the median for the following list of scores<br />20,13,6,17,9,8,10,12,5.<br />The first thing to do list the scores in order<br />5,6,8,9,10,12,13,17,20.<br />
14. 14. Calculating the median (middle score)<br />Start counting one off from each end until there is only one number left in the middle.<br />
15. 15. Calculating the median (middle score)<br />Now to find the median for the following scores.<br />5,21,7,20,9,18,12,13,15,17.<br />
16. 16. Calculating the median (middle score)<br />Now to find the median for the following scores.<br />5,21,7,20,9,18,12,13,15,17.<br />Start by counting off one from each end.<br />This time there are two numbers in the middle.<br />What do you do?<br />
17. 17. Calculating the median (middle score)<br />The two numbers left in the middle are 13 and 15.<br />Add the two numbers together then divide them by 2.<br />
18. 18. Calculating the median (middle score)<br />The two numbers left in the middle are 13 and 15.<br />Add the two numbers together then divide them by 2.<br />(13+15) ÷ 2 =<br />
19. 19. Calculating the median (middle score)<br />The two numbers left in the middle are 13 and 15.<br />Add the two numbers together then divide them by 2.<br />(13+15) ÷ 2 =<br />14<br />
20. 20. Find the mode (most common score)<br />The third type of average that can be found for a list of scores is known as the mode.<br />
21. 21. Find the mode (most common score)<br />The third type of average that can be found for a list of scores is known as the mode.<br />You can often work out the mode by looking at displayed data.<br />
22. 22. Find the mode (most common score)<br />The third type of average that can be found for a list of scores is known as the mode.<br />You can often work out the mode by looking at displayed data.<br />There may be more than one mode or no mode if all the scores are different.<br />
23. 23. Find the mode (most common score)<br />Find the mode for these scores<br />7,11,13,11,8,7,5,9.<br />
24. 24. Find the mode (most common score)<br />Find the mode for these scores<br />7,11,13,11,8,7,5,9.<br />The answer is ………………….<br />
25. 25. Find the mode (most common score)<br />Find the mode for these scores<br />7,11,13,11,8,7,5,9.<br />The answer is ………………….<br />Both 7 and 11 are modes.<br />
26. 26. Find the mode (most common score)<br />Now find the mode for these scores<br />7,8,14,11,12,9,10,5.<br />
27. 27. Find the mode (most common score)<br />Now find the mode for these scores<br />7,8,14,11,12,9,10,5.<br />The answer is ………………….<br />
28. 28. Find the mode (most common score)<br />Now find the mode for these scores<br />7,8,14,11,12,9,10,5.<br />The answer is ………………….<br />There is no mode.<br />
29. 29. Mmmmm!!!!!!!!!!!!!<br />