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.
3 n9 L. s! q  Ki stil remember some of the questions on my test today

---if a number n is picked out from a set of numbers.the probability of___is 1/2.
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1,n is bigger than the mean of all the numbers.
, \( H, c7 Y- ], g- T( B7 D1 D' ~2,n is even number
3,n is bigger than the median of the numbers
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wel~~~it's easy anyway as long as u know the difference between "mean "and "median"
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8 K/ H. y) ?0 v7 s  M5 ]8 bthis is from princton review of sample SAT
-------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?
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. U4 V; ~6 D; n% u% a" }(it's easy too, but really tricky in words, be cautious)
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minxUID: 108897

d`~n is bigger than the median
. S+ ^8 Q1 B0 f+ v- \coz the median is the number lies in the middle of the observation.
) _% l' c2 y( N  @% t6 H8 H- Nwhile mean is like the average which is not resistant to outliers