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Ratling [72]
3 years ago
10

To decrease an amount by 7%, what single multiplier would you use?

Mathematics
1 answer:
Fofino [41]3 years ago
7 0

To decrease something at 100% by 7% is:

100% - 7% = 93%

You multiply the original value by 0.93 to decrease it from it's original value by 7%

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The highway mileages of 147 cars are in a file named CARS2.† These cars are 2003 models. Find the mean, standard deviation, and
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So, for this data set, the mean is 3.6.

The median is also a average number, however, the median is the middle value in the list. For example, with the data set above, the median is 3, because, as the set has an even number of data, the middle term would be the mean of the two middle number, in other words:

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The standard deviation (σ) is the spread of data distribution, which means it's how "far" a number is from the mean of the set. The formula is

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1) Calculate the mean of the set: μ=3.6

2) Find the difference between each data point and the mean and then, the square of each one:

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(4-3.6)² = 0.16

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5) Take the square root: σ = 2.36

For the set of numbers above (2,4,1,5,2,8), the standard deviation is

σ = 2.36.

6 0
3 years ago
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Do you need the expanded notation form, or expanded factor form?
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