# Presentation mean mode and median

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### Presentation mean mode and median

1. 1. Mean, Median, ModeMean, Median, Mode & Range& Range By Miss Hilda
2. 2. Copyright © 2000 by Monica Yuskaitis Vocabulary Review • Sum – the answer to an addition problem. • Addend – the numbers you added together to get the sum. 6 + 9 = 15
3. 3. Copyright © 2000 by Monica Yuskaitis Definition MeanMean MeansMeans AverageAverage
4. 4. Copyright © 2000 by Monica Yuskaitis Definition • MeanMean – the average of a group of numbers. 2, 5, 2, 1, 5 Mean = 3Mean = 3
5. 5. Copyright © 2000 by Monica Yuskaitis How to Find the Mean of a Group of Numbers • Step 1 – Add all the numbers. 8, 10, 12, 18, 22, 26 8+10+12+18+22+26 = 96
6. 6. Copyright © 2000 by Monica Yuskaitis How to Find the Mean of a Group of Numbers • Step 2 – Divide the sum by the number of addends. 8, 10, 12, 18, 22, 26 8+10+12+18+22+26 = 96 How many addends are there?
7. 7. Copyright © 2000 by Monica Yuskaitis How to Find the Mean of a Group of Numbers • Step 2 – Divide the sum by the number of addends. 6)96 sum# of addends 1 6 36 6 63
8. 8. Copyright © 2000 by Monica Yuskaitis Definition MeMeddianian is in theis in the MiMiddddlele
9. 9. Copyright © 2000 by Monica Yuskaitis Definition • MedianMedian – the middle number in a set of ordered numbers. 1, 3, 7, 10, 13 Median = 7Median = 7
10. 10. Copyright © 2000 by Monica Yuskaitis How to Find the Median in a Group of Numbers • Step 1 – Arrange the numbers in order from least to greatest. 21, 18, 24, 19, 27 18, 19, 21, 24, 27
11. 11. Copyright © 2000 by Monica Yuskaitis How to Find the Median in a Group of Numbers • Step 2 – Find the middle number. 21, 18, 24, 19, 27 18, 19, 21, 24, 27
12. 12. Copyright © 2000 by Monica Yuskaitis How to Find the Median in a Group of Numbers • Step 2 – Find the middle number. 18, 19, 21, 24, 27 This is your median number.
13. 13. Copyright © 2000 by Monica Yuskaitis How to Find the Median in a Group of Numbers • Step 3 – If there are two middle numbers, find the mean of these two numbers. 18, 19, 21, 25, 27, 28
14. 14. Copyright © 2000 by Monica Yuskaitis How to Find the Median in a Group of Numbers • Step 3 – If there are two middle numbers, find the mean of these two numbers. 21+ 25 = 46 2)46 23 median
15. 15. Copyright © 2000 by Monica Yuskaitis What is the median of these numbers? 31, 7, 2, 12, 14, 19 13 2, 7, 12, 14, 19, 31 12 + 14 = 26 2) 26
16. 16. Copyright © 2000 by Monica Yuskaitis What is the median of these numbers? 53, 5, 81, 67, 25, 78 60 53 + 67 = 120 2) 120 5, 25, 53, 67, 78, 81
17. 17. Copyright © 2000 by Monica Yuskaitis Definition ModeMode is the mostis the most PopularPopular
18. 18. Copyright © 2000 by Monica Yuskaitis Definition • A la modeA la mode – the most popular or that which is in fashion. Baseball caps are a la mode today.
19. 19. Copyright © 2000 by Monica Yuskaitis Definition • ModeMode – the number that appears most frequently in a set of numbers. 1, 1, 3, 7, 10, 13 Mode = 1Mode = 1
20. 20. Copyright © 2000 by Monica Yuskaitis How to Find the Mode in a Group of Numbers • Step 1 – Arrange the numbers in order from least to greatest. 21, 18, 24, 19, 18 18, 18, 19, 21, 24
21. 21. Copyright © 2000 by Monica Yuskaitis How to Find the Mode in a Group of Numbers • Step 2 – Find the number that is repeated the most. 21, 18, 24, 19, 18 18, 18, 19, 21, 24
22. 22. Copyright © 2000 by Monica Yuskaitis Definition RangeRange is the distanceis the distance BetweenBetween
23. 23. Copyright © 2000 by Monica Yuskaitis Definition • RangeRange – the difference between the greatest and the least value in a set of numbers. 1, 1, 3, 7, 10, 13 Range = 12Range = 12
24. 24. Copyright © 2000 by Monica Yuskaitis How to Find the Range in a Group of Numbers • Step 1 – Find the lowest and highest numbers. 21, 18, 24, 19, 27 18, 19, 21, 24, 27
25. 25. Copyright © 2000 by Monica Yuskaitis How to Find the Range in a Group of Numbers • Step 2 – Find the difference between these 2 numbers. 18, 19, 21, 24, 27 27 – 18 = 9 The range is 9