(18 + 18 + 11 + 7 + 6 + 11 + 10 + 20 + 7)/9
= 12
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The mean, also often called the "average", is
1/9 of (18 + 18 + 11 + 7 + 6 + 11 + 10 + 20 + 7)
-20, -17, -12, -11, 6, 7, 8, 10, 11, 16, 17, 18, 20
20/18 = 10/9 = 11/9
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
18
what is the mode of the following data 18, 17, 12, 14, 8, 21, 10, 11, 19, 20, 10, 5, 17, 12, 10, 20
(11+7+20+2+10)/5 = 50/5 = 10
First, to find median put numbers in order so: 5, 5, 6, 7, 8, 9, 10, ( 10, 12 ,) 14, 15, 17, 18, 18, 18, 20 10 + 12= 22 divided by 2= 11, the median is 11
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20
The median of {10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20] is the 6th values which is 15.
18/20 = 9/10
9/10 of 20 = 18
That would be: 20! / 10! = 20 * 19 * 18 * 17 * 16 * 15 * 14 * 13 * 12 * 11 = 670442572800 * * * * * No! That is the number of permutations! The number of combinations is 20C10 = 20!/(10!*10!) = 20*19*18*17*16*15*14*13*12*11/(10*9*8*7*6*5*4*3*2*1) = 184,756