2.5
The arithmetic mean is a weighted mean where each observation is given the same weight.
What does mean mean
the mean is an average of a set of numbers
1.The Geometric mean is less then the arithmetic mean. GEOMETRIC MEAN < ARITHMETIC MEAN 2.
It means equal fractoins. For example,2 over3 equals 4 over 6
0.25 = 1/4
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It is a fraction in which the numerator and the denominator are relatively prime.
2/8=1/4=3/12
4 over 10 8 over 20
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3/8 = 6/16 = 12/32 = 18/48
1/4 2/8 4/16 8/32 16/64 64/128
2.5
Here is an example: (2/3) * (5/9)First multiply the two numerators (the numbers on the top): 2*5 = 10. This will be your new numerator.Then multiply the two denominators (the numbers on the bottom) : 3*9 = 27.Put your new numerator over your new denominator: 10/27Reduce the new fraction if you need to. (10/27 is fully reduced.)
To compare two fractoins in general it is useful to give them identical denominators. Therefore we write 1/2 = (1*9)/(2*9) = 9/18 and 3/9 = (3*2)/(9*2) = 6/18. It is easy to see that 9/18 must be bigger than 6/18, so 1/2 is bigger than 3/9 (which is more conveniently written as 1/3 in this specific case).