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

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Calculating the mean, median and mode

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