Range: the range of a data set is the difference between the largest and smallest number in your set of data. To find it, just subtract the smallest number from the largest number in your data set. That is now going to be your range.
Example: 23, 40, 62, 90, 35, 89, 67. Subtract 90-23 and you should get 67. Therefore, 67 is your range.
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You have your set of numbers:
2,3,4,5,6,7,8,9
You then take the smallest number (2) and the biggest number (9) and you take 2 away from 9 which gives you 7 which is your answer.
I don't know if the answer above is correct but it may be i know how to find the mean, median, and mode i haven't heard of the range very much.
The range = the difference between the highest and the lowest values in the data set. For example if I had a data set like this: 10, 20, 30, 40, 50 50 is the highest number and 10 is the lowest number. 50-10= 40. 40= the range of the above data set.
51
To get the range in math, you take the lowest number in a set of numbers, and subtract it from the highest number. Example: 1,3,5,7,9 9-1=8 The range is 8 for this set of data.
In any given set, the range is the smallest number subtracted from the largest number.
Iqr stands for inter quartile range and it is used to find the middle of the quartiles in a set of data. To find this, you find the lower quartile range and the upper quartile range, and divide them both together.