real sat maths for 10.12

minxUID: 108897

it's not really easy to get 800 in math,unless u make sure that u know every math word verywell.
- X" G9 ?7 G4 @/ F# ?4 Y* L$ X( ?i stil remember some of the questions on my test today
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---if a number n is picked out from a set of numbers.the probability of___is 1/2.
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5 t6 M, ?, V% Y* w! |: |$ V1,n is bigger than the mean of all the numbers.
' y! D6 o( `- e" M& N, E0 V2,n is even number
. m  K: f& z9 u8 B3,n is bigger than the median of the numbers

a,1,2
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wel~~~it's easy anyway as long as u know the difference between "mean "and "median"
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this is from princton review of sample SAT
2 e  N" X! a# k( n# n1 f' R-------combining a cup of vinegar and a cup of oil makes a 2-cup-dressing sauce.if the yield is 4 cups and the ratio of vinegar in volumn is 1/3,what's the fraction of the original dressing that is vinegar?

(it's easy too, but really tricky in words, be cautious)
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minxUID: 108897

d`~n is bigger than the median
coz the median is the number lies in the middle of the observation.
, h6 d, }* i6 K  v' |+ ?$ pwhile mean is like the average which is not resistant to outliers