WEBVTT
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Find the range and the midrange of the following sets of numbers
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So what the range tells us is essentially
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how spread apart these numbers are
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And the way that you calculate it is
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You just take the difference between the
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the largest of these numbers and the smallest
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of these numbers
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And so if we look at the largest
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of these numbers
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I'll circle it in magenta, it looks like it is 94
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94 is larger than every other number here
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So that's the largest of the numbers
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And from that we want to subtract
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the smallest of the numbers
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And the smallest of the numbers in our set
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right over here is 65
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(Circled in green)
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So you want to subtract 65 from 94
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and this is equal to...
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if this was 95 minus 65, it would be 30
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94 is one less than 95
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so it is 29
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So the larger this number is that means the more spread out the larger the
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difference between the largest and the smallest number
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the smaller this is, that means, the [tighter?]
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the range [just to use the word itself?] of the numbers actually are, so that's the range
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the midrange is one way of thinking
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to some degree of kind of central tendency, so midrange,
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midrange, and would you do with the midrange is to take the average
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of the largest number and the smallest number
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so, here we took the difference that's the range. The midrange would be the average of this two numbers
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so 94 plus 65 when we talk about average and [talk about] arithmetic mean over 2 so this is going to be what...
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90 plus 60 is 150, 150 plus...
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4 plus 5 is 159, 159 divided by 2 is equal to
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150 divided by 2, is 75, 9 divided by 2 is 4.5,
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so this would be 79.5
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so is one kind [of way?] of thinking about the middle of these numbers,
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another way is obviously the arithmetical mean we [] to take []
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obviously you can also look at things as the median and the mode
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so range and midrange