mean, mode, median.ppt edit.ppt

8/18/2019 Mean, Mode, Median.ppt edit.ppt

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Mean, Median, ModeMean, Median, Mode

& Range& Range


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Defnition

MeanMean

MeansMeans

AverageAverage


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Defnition

•MeanMean – the average o agroup o numbers.

2, 5, 2, 1, 5

Mean = 3Mean = 3


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Ho to !ind the Mean o a"roup o #umbers

•$tep % – Add a the numbers.

8, 10, 12, 18, 22, 26

8+10+12+18+22+26 = 96


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•$tep ' – Divide the sum b(the number o addends.

8, 10, 12, 18, 22, 26

8+10+12+18+22+26 = 96How many addends are there?


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•$tep ' – Divide the sum b(the number o addends.

6)96 sum# of addends1

636

6

63


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)he mean or average othese numbers is %*.

8, 10, 12, 18, 22, 26


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+hat is the mean o thesenumbers

7, 10, 16

11


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2, 9, 1, 27

13


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1, 2, 7, 11, 19

8


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26, 33, 1, 52

38


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Defnition

MeMeddianian

is in theis in the

MiMiddddee


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Defnition

•MedianMedian – the midde numberin a set o ordered numbers.

1, 3, 7, 10, 13

Median = -Median = -


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Ho to !ind the Median ina "roup o #umbers

•$tep % – Arrange the numbersin order rom east to greatest.

21, 18, 2, 19, 27

18, 19, 21, 2, 27


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•$tep ' – !ind the middenumber.

21, 18, 2, 19, 27

18, 19, 21, 2, 27


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•$tep ' – !ind the middenumber.

18, 19, 21, 2, 27

!h"s "s your med"an numer$


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•$tep 3 – there are to middenumbers, fnd the mean o these tonumbers.

18, 19, 21, 25, 27, 28


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•$tep 3 – there are to middenumbers, fnd the mean o these tonumbers.

21+ 25 = 6

2) 623 med"an


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+hat is the median othese numbers

16, 10, 7

10

7, 10, 16


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29, 8, , 11, 19

11

, 8, 11, 19, 29


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31, 7, 2, 12, 1, 19

132, 7, 12, 1, 19, 31

12 + 1 = 26 2) 26


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53, 5, 81, 67, 25, 78

60

53 + 67 = 120 2) 120

5, 25, 53, 67, 78, 81


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Defnition

ModeMode

is the mostis the most

/opuar/opuar


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Defnition

•ModeMode – the number thatappears most re0uent(

in a set o numbers.1, 1, 3, 7, 10, 13

Mode = %Mode = %


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Ho to !ind the Mode in a"roup o #umbers

•$tep % – Arrange the numbersin order rom east to greatest.

21, 18, 2, 19, 18

18, 18, 19, 21, 2


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Ho to !ind the Mode in a"roup o #umbers

•$tep ' – !ind the numberthat is repeated the most.

21, 18, 2, 19, 18

18, 18, 19, 21, 2


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+hi1h number is themode

29, 8, , 8, 19

8

, 8, 8, 19, 29


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1, 2, 2, 9, 9, , 9, 10

9

1, 2, 2, , 9, 9, 9, 10


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22, 21, 27, 31, 21, 32

21

21, 21, 22, 27, 31, 32

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