Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Assumed Means Deviations in F2 Test : When actual means of X and Y variables are in fractions the calculations can be simplified by taking the deviations from assumed means. When deviations are taken from assumed means the entire procedure of finding regression equations remains the same - the only difference is that instead of taking deviations from actual means, we take the deviations from assumed means. The two regression equations are:X - X = r σx / σy ( y-y)The value of σx/ σy will now be obtained as follows r σx/ σy = N Σ dx dy - (Σ dx x Σ dy)/N Σ d2y - (Σ dy)2dx = (X - A) and dy = (Y - A)Similarly the regression equation of y on x is y - y = r σy/ σx (X - X)r σy / σx = N Σ dx dy - Σ dx Σ dy / N Σ d x2 - (Σ dx)2It should be noted that in both the cases the numerator is the same the only difference is in the denominator when the regression coefficients are calculated from correlation table their values are obtained as follows.r σx/ σy = N Σ f dx dy - Σ f dx Σ dy /N Σ fd2y - (Σ f dy)2 x ix / iyIx= class interval of X variable and Iy = class interval of y variableSimilarly r σy/ σx = N Σ fd2x - (Σ f dx)2 X iy/ixAs is clear from above the formulae for calculating regression coefficients in a correlation table are the same - the only difference is that in a correlation table we are given frequencies also and hence we have multiplied every value by f.Illustration: From the data of illustration calculate regression equation by taking deviations of X series from 5 and of y series form 7.
Regression equation of X on Y; X-X = r σx /σy (Y-Y) X = ΣX/N = 30/5 6; y = Σ y/N = 40/5 = 8 r σx/σy = N Σ dxdy - Σ dx Σ dy/N Σ d2y - (Σdy)2 = [5 (- 21) - (5)(5)]/(5)(25) - (5)2 = -105 - 25/(- 125 - 25) = - 130 / 100 = - 1.3 X - 6 = - 1.3 (Y - 8)X - 6 = - 1.3 Y + 10.4 or X = 16.4 - 1.3 yRegression equation of Y on X ; Y - Y = r σy/ σx = N Σ dx dy - Σ dx Σ dy/N Σ d2x - (Σ dx)2= 5 ( - 21) - (5) (5) / (5) (45) - (5)2 = - 105 - 25 / 200 = - 0.65Y - 8 = - 0.65 (X - 6) Y - 8 = - 0.65 X + 3.9 or Y = 11.9 - 0.65 X > Expertsmind.com offers unique solutions for statistics assignments, homework
Expertsmind.com offers unique solutions for statistics assignments, homework
Variance analysis In spending budget (or control sales in general), a change is the change between an allocated, thought out or conventional quantity and the actual quantity incur
Who can issue a bill of exchange for what purpose? Only a supplier who has to get the cash from his client for the purchase which was done on credit score platform can increase
Defination,Advantages and Limitation, Proper Management of company,
ion #Minimum 100 words accepted#
what are the disadvantages of quantatity tecqines..
Hi I have an assignment due of business statics on spss software
Probability 3DP, a Luxembourg-based company plans to develop and sell highly specialized 3D printers. The cost of product development is estimated at EUR 50,000.-, irrespective
October Transactions Date Transaction Description Oct. 1 Began business by making a deposit in a company bank account of $12,000, in exchange for 1,200 shares of $10 par value com
conceptual structure of financial In financial accounting, There were many breaks in the conceptual structure of individual forums for example both the forums hadn't conducted
Use the “best subsets” method to identify a “best” model for the data. Explain what you think is the best model and why.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd