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GalinKa [24]
3 years ago
15

What is the variance of the following data? If necessary, round your answer to two decimal places.12, 13, 8, 13, 9, 11, 12, 9, 1

1
Mathematics
1 answer:
siniylev [52]3 years ago
8 0
To find the variance, 1. Find the arithmetic mean (average) 2. Find the distance of each number from the mean (x-the mean=?) 3. Square each number 4. Add up all of the squares 5. Divide the final sum by the original mean. 
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The way to do it can be explained like this:
Say AB and CD are the two parallel lines cut by a transversal at E and F respectively.
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Now lets prove if this is true:
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Also
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3 years ago
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Stella [2.4K]

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Step-by-step explanation:

6 0
2 years ago
Write an equation of the line that passes through (-4, 1) and is parallel to the
LiRa [457]

Answer:

y-1=2(x+4) or y=2x+9

Step-by-step explanation:

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plug in

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test:

(1)=2(-4)+9

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