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Least Square Line Equation Let (Di, yi), i = 1,2,..., 10 represent the earning of 10 businesses, measured in $1000, in a
Posted: Wed May 11, 2022 8:05 pm
by answerhappygod
- Least Square Line Equation Let Di Yi I 1 2 10 Represent The Earning Of 10 Businesses Measured In 1000 In A 1 (71.3 KiB) Viewed 35 times
Least Square Line Equation Let (Di, yi), i = 1,2,..., 10 represent the earning of 10 businesses, measured in $1000, in a city for two consecutive months; x representing the March earnings and y representing the April earnings. The following table summarizes the data. Summary of 10 Business Earnings [in $1000) for March and April Months March (X) April (Y) Sample Size 10 10 Mean 7.89 6.53 Variance 0.432 1.313 F The covariance of X and Y is 0.4959. Recall: X = 1 I. Var[X] = !=(x1 - 2)2, and Cov[X,Y] = k1n1 (- x)(y-y). Use the given information to answer the following questions. You may need the following equations to answer those questions: SST = (3:- 2)2 SD[X] = $x = Var X], and Cor[X,Y] =r= Cov[XY 5xy