Calculate the approximate mean for 25,7,22,33,18,15
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Q1. The points A (4, -3) and B (0, 5) lie on the line L.
(a) Find the equation of line L. [3] (b) M is the midpoint of AB. Find the coordinates of M.
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How to Find the Mean (or Average Value)
To figure the mean, add up the numbers, 3+3+4+7+8+9+11+15+19+27=106 then divide it by the number of data points 106/10=10.6.
How to Find the Median9, 11, 15, 19, 27. There are 10 total numbers, so the 5th and 6th numbers are used to figure the median. (8+9)/2 = 8.5
If there were 9 numbers in the series rather than 10 you would take the 5th number and would not need to average the 2 middle numbers. The 2 middle numbers only need to be averaged when the data set has an even number of data points in it.
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