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Serggg [28]
3 years ago
9

HELP

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0

Answer:

166

Step-by-step explanation:

5/2=2.5

415/2.5

=166

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B or second option.

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Answer: range= 26, variance= 80 and standard deviation= 8.94

Step-by-step explanation:

Range = highest - lowest

Range = 146 - 120

Range= 26

Let m be mean

M=mean=sum/n

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The standard deviation sample formula:

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Let start finding:

|x-m|^2

For 1st: |120-133|^2=169

For 2nd: |134-133|^2=1

For 3rd: |146-133|^2=169

For 4th: |127-133|^2=36

For 5th: |138-133|^2=25

For 6th: |133-133|^2=0

Summation of |x-m|^2 = 400

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S.D = sqrt( Summation of |x-m|^2 / n-1)

S.D= sqrt(400 / 5)

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