1. The following sample contains values of the price and quantity sold of a particular commodity. Use quantity sold as the dependent variable Y.

Price (X)	6.00	3.00	7.00	1.00	2.00	8.00
Quantity sold (Y)	53	67	48	76	70	28

x=27, y=342, x2=163, xy=1295, y2= 21062, n=6

a) Estimate the regression line and also write the prediction equation.

2. . The following sample contains values of the price and quantity sold of a particular commodity. Use quantity sold as the dependent variable Y.

Price (X)	6.00	3.00	7.00	1.00	2.00	8.00
Quantity sold (Y)	53	67	48	76	70	28

x=27, y=342, x2=163, xy=1295, y2= 21062, n=6

b) Predict the number of quantities sold for the commodity whose price is $5.00.

3. The following sample contains values of the price and quantity sold of a particular commodity. Use quantity sold as the dependent variable Y.

Price (X)	6.00	3.00	7.00	1.00	2.00	8.00
Quantity sold (Y)	53	67	48	76	70	28

x=27, y=342, x2=163, xy=1295, y2= 21062, n=6

c) Find the sample correlation coefficient r and interpret.

4. The following sample contains values of the price and quantity sold of a particular commodity. Use quantity sold as the dependent variable Y.

Price (X)	6.00	3.00	7.00	1.00	2.00	8.00
Quantity sold (Y)	53	67	48	76	70	28

x=27, y=342, x2=163, xy=1295, y2= 21062, n=6

d) Find the coefficient of determination and interpret .