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