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9 Cards in this Set
- Front
- Back
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un cropped data (Mean) x=sum x / n cropped data x = sum fx/ sum f
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mean : CI F X : beganing of ci + end of ci / 2 fx |
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un cropped data ( median) : if n is odd : n+1 / 2. if n is even: n/2 & n/2+1. median : A+ sum/2- (sum fi) / fun *L |
1- sum f / 2 and see in f and sum letter letter to reach this number and when reach that t called A. 2- CI - 3- F - 4- Upper < of ci 5- sum fi عندنا كام واحد اصغر من |
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fn = the greatest frequency. fn-1 : before the mode fn+1 : after the mode
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mode = A* D1/D1+D2*L D1= FN-FN-1 D2=FN-FN+1
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Standard deviation=^sumfx*/sumf -(X)* |
1- X- 2- CI 3- F 4-X 5-FX 6-FX* |
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MEAN demation : sum (x-x-)f/sum f |
1-x- 2- CI 3- F 4-X 5-FX 6- (X-X-) 7- (X-X-)F |
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Regression : y= ax+b
A = n sum xy - sum x sum y/ n sum x* -( sumx)* b = sum y - a sum x / n |
1- x 2- y 3- xy 4- x* |
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correlation: direct strong more 0.6 - direct medi 0.6 - direct weak 0.3 r=n sum xy - sum x sum y / ^n sum x* - sum( x)* |
1- x 2- y 3- xy 4-x* 5- y* |
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spermant carr. ( rank) ترتيب الداتا من الاصغر الى الاكبر |
order :1 2 3 4 5 6 7 8 grade: F F D C B- B AA+ rank ; 1.5 3 4 5 6 7 8 |
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find the value of x and y that maximize at z=30x+100y under the following. 3x+2y <360 x + 2y < 200 x>0 , y >0 |
1-3x +2y =360 at x = zero and find y , at y= zero and find x. 2- x+2y = 200 at x= zero and find y , at y= zero and find x. 3- 1,2 * fe x by opposite and then minus to find x ,sub in 1 to find y 4- (0,180), (120,0) (0,100),(200,0) (80,60) 5- draw the gravical 6- z= 30x + 100y and supply in the gravical |
