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Grades on a political science test and the number of hours of paid work in the week before the test were studied. The instructor was
Grades on a political science test and the number of hours of paid work in the week before the test were studied. The instructor was trying to predict the grade on a test from the hours of work. The figure shows a scatterplot and the regression line for these data. a. By looking at the plot and the line (without doing any calculations), state whether the correlation is positive or negative and explain your prediction
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