(Answered) A random sample of 11 statistics students produced the

Statistics

A random sample of 11 statistics students produced the following data where x is the third exam score, out of 80, and y is the final exam score, out of 200.

THIRD EXAM SCORE (X)    FINAL EXAM SCORE (Y)
65                                         175
67                                         133
71                                         185
71                                         163
66                                         126
75                                         198
67                                         153
70                                         163
71                                         159
69                                         151
69                                         159

A) Predict the final score if the person obtains a third exam score of 68.

B) Calculate the standard error of the estimate.

C) Give the percentage of variation explained by regression.

2. The regression line = 3 + 2x has been fitted to the data points (4,8) , (2,5) and (1,2). The sum of the squared residuals will be

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