Hey can u please help i will give brainliy if u get it right :)
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A proportion is a statement that two ratios are equal. A ratio is a comparison of two different quantities. "Miles per hour" is a ratio. "Dollars per pound" is a ratio. A proportion is that two of these things are equal.
For example, paying $2/pound for apples is the same as paying $6 for 3 pounds:
That's a portion.
When working with proportions in word problems, you start by setting up one ratio/fraction where you know all the information. You then set up the second one that's missing a piece of information, but you make sure to set it up using the same structure.
If your first ratio is "miles over hours," then the next ratio has to have the same organization.
If your first ratio is "rise over run," then the next ratio has to have the same organization.
So we have a set of integers,
And we need to compute some stats.
First the range,
The range of data set is difference between the maximum and the minimum of the data set.
So the minimum is 15 and maximum is 34 therefore the range is 34 - 15 = 19.
Second the interquartile range,
The interquartile range of data set is the difference of the first and third quartiles.
First quartile is the value separating the lower quarter and higher three - quarters of the set. The first quartile is computed by taking median of the lower half of the sorted set. This is 15, 20, 25, 25 and it's median is 22.5
Third quartile is therefore the median of 27, 28, 30, 34 which is 29.
Next up, variance.
The variance of set measures how much data is spread out. For data set with an average
,
So first compute the average value which is actually a mean,
The sum of numbers in set is 204.
Divide this by number of elements in the set (8).
Then compute the variance,
And finally standard deviation,
Since have computed variance the standard deviation is nothing too hard. It's defined as a square root of variance,
Hope this helps.
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