mean, mode, median(1).pptx
TRANSCRIPT
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Mean, Median, Mode
& RangeBy Group 5
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Vocabulary Review
• Sum – the answer to anaddition problem
• !ddend – the numbersyou added together toget the sum
6 + 9 = 15
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"e#nition
Mean
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"e#nition
• Mean – the average o$ agroup o$ numbers
2, 5, 2, 1, 5
Mean %
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Mean is $ound by evening
out the numbers
2, 5, 2, 1, 5
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Mean is $ound by evening
out the numbers2, 5, 2, 1, 5
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Mean is $ound by evening
out the numbers2, 5, 2, 1, 5
mean = 3
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'ow to (ind the Mean o$ aGroup o$ )umbers
• Step * – !dd all thenumbers
8, 10, 12, 18, 22, 26
8+10+12+18+22+26 = 96
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'ow to (ind the Mean o$ aGroup o$ )umbers
• Step + – "ivide the sum bythe number o$ addends
8, 10, 12, 18, 22, 26
8+10+12+18+22+26 = 96How many addends are there?
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'ow to (ind the Mean o$ aGroup o$ )umbers
• Step + – "ivide the sum bythe number o$ addends
6)96 sum# of addends1
636
6
63
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'ow to (ind the Mean o$ aGroup o$ )umbers
he mean or average o$these numbers is *-
8, 10, 12, 18, 22, 26
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.hat is the mean o$ thesenumbers/
7, 10, 16
11
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.hat is the mean o$ thesenumbers/
2, 9, 1, 27
13
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.hat is the mean o$ thesenumbers/
1, 2, 7, 11, 19
8
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.hat is the mean o$ thesenumbers/
26, 33, 1, 52
38
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"e#nition
Median
is in the
Middle
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"e#nition
• Median – the middlenumber in a set o$ordered numbers
1, 3, 7, 10, 13
Median % 0
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'ow to (ind the Median ina Group o$ )umbers
• Step * – !rrange thenumbers in order $romleast to greatest21, 18, 2, 19, 27
18, 19, 21, 2, 27
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'ow to (ind the Median ina Group o$ )umbers
• Step + – (ind the middlenumber
21, 18, 2, 19, 27
18, 19, 21, 2, 27
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'ow to (ind the Median ina Group o$ )umbers
• Step + – (ind the middlenumber
18, 19, 21, 2, 27
!h"s "s your med"an numer$
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'ow to (ind the Median ina Group o$ )umbers
• Step – 1$ there are twomiddle numbers, #nd the
mean o$ these two numbers
18, 19, 21, 25, 27, 28
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'ow to (ind the Median ina Group o$ )umbers
• Step – 1$ there are twomiddle numbers, #nd the
mean o$ these two numbers21+ 25 = 6
2) 623 med"an
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.hat is the median o$these numbers/
16, 10, 7
10
7, 10, 16
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.hat is the median o$these numbers/
29, 8, , 11, 19
11
, 8, 11, 19, 29
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.hat is the median o$these numbers/
31, 7, 2, 12, 1, 19
132, 7, 12, 1, 19, 31
12 + 1 = 26 2) 26
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.hat is the median o$these numbers/
53, 5, 81, 67, 25, 78
60
53 + 67 = 120 2) 120
5, 25, 53, 67, 78, 81
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"e#nition
Mode
is the most
2opular
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"e#nition
• mode – the most popularor that which is in$ashion
%asea&& 'a(s are mode today$
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"e#nition
• Mode – the number thatappears most $re3uently
in a set o$ numbers1, 1, 3, 7, 10, 13
Mode % *
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'ow to (ind the Mode in aGroup o$ )umbers
• Step * – !rrange thenumbers in order $romleast to greatest21, 18, 2, 19, 18
18, 18, 19, 21, 2
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'ow to (ind the Mode in aGroup o$ )umbers
• Step + – (ind the numberthat is repeated the most
21, 18, 2, 19, 18
18, 18, 19, 21, 2
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.hich number is themode/
29, 8, , 8, 19
8
, 8, 8, 19, 29
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.hich number is themode/
1, 2, 2, 9, 9, , 9, 10
9
1, 2, 2, , 9, 9, 9, 10
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.hich number is themode/
22, 21, 27, 31, 21, 32
21
21, 21, 22, 27, 31, 32
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"e#nition
Range
is the distance
Between
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"e#nition•
Range – the di4erencebetween the greatest andthe least value in a set o$
numbers
1, 1, 3, 7, 10, 13
Range % *+
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'ow to (ind the Range in aGroup o$ )umbers
• Step * – !rrange thenumbers in order $rom
least to greatest21, 18, 2, 19, 27
18, 19, 21, 2, 27
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'ow to (ind the Range in aGroup o$ )umbers
• Step + – (ind the lowestand highest numbers
21, 18, 2, 19, 27
18, 19, 21, 2, 27
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'ow to (ind the Range in aGroup o$ )umbers
• Step – (ind thedi4erence between these
+ numbers18, 19, 21, 2, 27
27 18 = 9!he ran*e "s 9
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.hat is the range/
29, 8, , 8, 19
29 = 25
, 8, 8, 19, 29
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.hat is the range/
22, 21, 27, 31, 21, 32
32 21 = 11
21, 21, 22, 27, 31, 32
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.hat is the range/
31, 8, 3, 11, 19
31 3 = 28
3, 8, 11, 19, 31
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.hat is the range/
23, 7, 9, 1, 19
1 7 = 3
7, 9, 23, 19, 1