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    Hypothesis Testing - Obtaining T-Stats and Critical T-Values

    Dear all, I have been given the following question I don't really understand how to interpret this question. Commonly, hypothesis questions refer to one sampled variable with a given criterion. But this question just states that I must test the null hypothesis that one variable is not...
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    Calculating the bias of variance estimator

    Dear all, I have been given two variance (S^2) estimators, S1 and S2. I am not including the square (^2) as it may cause confusion. And I am to determine the bias of these estimators. Now, given that estimator S1 has the same equation as sample variance, it should therefore be classed as...
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    Which SSR (Regression sum of squares) is theoretically larger?

    Dear all, I have 3 fitted lines: Y = b0 + (b1)X Y = (0.5)b0 + (b1)X Y = b0 + 0.5(b1)X Where and In addition to the the 3 equations above, using the information provided by the image attached I would like to determine (theoretically), which one of the three fitted lines (listed...
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    Two variable OLS Regression - using normal equations

    Hi, I am experiencing difficulties in understanding the following question; I have been assigned two variables (X and Y), and have been given a data-set which consists of 50 data entries for both variables X and Y, ranging from 15-60. I have also calculated ƩX, ƩX^2, ƩXY and ƩY. Essentially...