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Lesechka [4]
3 years ago
10

Variance and standard deviation

Mathematics
1 answer:
kirza4 [7]3 years ago
3 0

Answer: 8.3

Step-by-step explanation:

To find the variance, you want to find the mean of the data.

\frac{3+3+8+1+9+6}{6} =5

Now that we have the mean, we find the difference between each data point and the mean.

3-5=-2

3-5=-2

8-5=3

1-5=-4

9-5=4

6-5=1

With the difference, you square each and find the average.

(-2)²=4

(-2)²=4

3²=9

(-4)²=16

4²=16

1²=1

\frac{4+4+9+16+16+1}{6} =\frac{25}{3}

The variance is 8.3.

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Answer:

ur correct u got it.

Step-by-step explanation:

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What will be the product if a number if it is multiplied by 1?
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The product if a number if it is multiplied by 1 is the same number itself.

Given:

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The product meaning in math is a number that you get to by multiplying two or more other numbers together.

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2) So as per the rule if we multiply any of the whole numbers with 1 we get the same number.

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= 1 * 155

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1 year ago
Solve 7^x-2 =30.
Anna007 [38]

Answer:

x = 3.748

Step-by-step explanation:

this problem requires logs

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3 0
2 years ago
The scale of a map is 1:40000. What distance on the map represents a real distance of 5km?​
Rufina [12.5K]

Answer:

0.125

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3 years ago
Find the coordinates of the midpoint of the segment whose endpoints are h(6,4) and k(2,8)
ozzi

Answer:

(4,6)

Step-by-step explanation:

we know that

The formula to calculate the coordinates of the midpoint between two points is equal to

M(\frac{x1+x2}{2},\frac{y1+y2}{2})

we have that

The coordinates of hk

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substitute in the formula to calculate the midpoint

M(\frac{6+2}{2},\frac{4+8}{2})

M(\frac{8}{2},\frac{12}{2})

M(4,6)

7 0
3 years ago
Read 2 more answers
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