document.write( "Question 729374: Day temp buns \n" );
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document.write( "3 20 49 \n" );
document.write( "4 21 54 \n" );
document.write( "5 28 65 \n" );
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document.write( "a. Plot a scatter diagram of the data \n" );
document.write( "b. Find the equation of the regression line using the least squares method \n" );
document.write( "c. Interpret the meaning of the constant a, in the regression equation \n" );
document.write( "d. Estimate the number of buns, the vendor sells on a day for which the temperature is 30°C \n" );
document.write( "e. Calculate Pearson’s correlation coefficient and comment \n" );
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