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saw5 [17]
3 years ago
13

Here is a data set: 5 10 10 10 15 100 after studying the data, the research realized that the value 100 was meant to be recorded

as 15. What would happens to the mean and standard deviation of the data set when the 100 is changed to a 15 for the original data set, with the 100, would the median or the mean be a better choice of measure for the center? Explain your reasoning
Mathematics
1 answer:
attashe74 [19]3 years ago
5 0

Answer:

The mean and SD will change

The median is a better measure of the center since it will not change in this case

Step-by-step explanation:

Given that the value 100 was changed to 15, what will happen is that the value of the mean will decrease since there is a lower total value now. This will consequently decrease the value of the standard deviation too.

Yes, the median will be a better choice

This is because, by changing the value of 100 to 15, the value of the median stays the same and thus the previous information would not be changed if the median we used .

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Answer:

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Step-by-step explanation:

So we want to find<em> θ. </em>We are already given the hypotenuse and the side length opposite to <em>θ. </em>Therefore, we can use the trig function sine to find <em>θ. </em>

Recall that:

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Plug in 10.2 for the opposite side and 15 for the hypotenuse:

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Solve for <em>θ. </em>Use a calculator:

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3 years ago
A 5.ft tall man casts a shadow along the ground that is 8 ft. long. At the same time a giraffe casts a shadow that is 12 ft. lon
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Step-by-step explanation:

when the length of the shadow is 8ft, the actual height of the man = 5ft

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\frac{8}{5} × \frac{12}{x}

x= \frac{15}{2}

x=7.5 ft

Therefore, the giraffe is 7.5ft tall.

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