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2 years ago

The variance calculated on 34 scores is equal to 14.94. what is the standard deviation?

Mathematics

1 answer:

ElenaW [278]2 years ago

4 0

Since, the variance calculated on 34 scores is equal to 14.94.

We have to determine the standard deviation.

Relationship between Variance and standard deviation is:

Standard deviation = $\sqrt(Variance)$

Substituting the value of Variance, to evaluate the standard deviation.

We get,

Standard deviation = $\sqrt(14.94)$

= 3.865

= 3.87

Therefore, the standard deviation is 3.87

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atroni [7]

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3 years ago

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2 years ago

3.) mr. smith’s class sold wrapping paper for $3.50 each and mr. davis’ class sold magazines for $2.75 each. together, the class

igor_vitrenko [27]

Answer:

The number of wrapping paper sold was 32 and the number of magazines sold was 40

Step-by-step explanation:

Let

x ----> the number of wrapping paper sold

y ----> the number of magazines sold

we know that

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$x+y=72$ ----> equation A

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Solve the system of equations by graphing

Remember that the solution of the system of equations is the intersection point both graphs

using a graphing tool

The solution is (32,40)

see the attached figure

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3 years ago

The price of a stock increased 12 cent Monday morning. On Monday afternoon, the price of the stock decreased 56 cent. On Tuesday

jeyben [28]

Ok, were starting at when the stock increased first which is 12 cents on monday. to find your answer your going to need to add all of the increased cents first; then subtract.

12 + 14 = 26

So we have 26 cents, now we subtract the 56.

26 - 56 = -30

now we have -30. now we find out how far away on the number line it is from 12. your answer would be 42.

now for your answer, (i did all of that for other people who had the same question but different answer)

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3 years ago

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Lilit [14]

Answer:

Step-by-step explanation:

85 divided by 5 in distributive property

85 can be break into 80 and 5

80+5 is 85

Now we divide each term by 5

$\frac{85}{5} =\frac{80+5}{5} =\frac{80}{5} +\frac{5}{5}$