Form normal equations and hence find most plausible values of x+y=3.01, 2x - y = 0.03, x+3y=7.03, 3x + y = 4.97. x and y from the following equations :
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- I would like to ask Qb. I think it's using the normal approximation to calculate the answer but I can't.Determine the equation of the normal line at the given x-value.After performing a statistical regression on a set of data the value of the correlation coefficient r was -0.2041. What does that imply about the data?
- Two lines of regression are given by 5x+7y-22=0 and 6x+2y-22=0. If the variance of y is 15, find the standard deviation of x.For the regression model Yi = b0 + eI, derive the least squares estimator.There is a linear regression: Yi = B0+ B1(Xi^2)+ ei present, where Xi is squared. ei ∼ N(0,σ2). How would I derive LSE for B0 and B1 and their variance?