Regress one variable on the other

Reference no: EM131381821

Repeat problem 1 for the data of problem 3.

Problem 1
Carry out an F test for a linear relationship in problem 2. Compare your results with those of the t test.

Problem 2
Recently, research efforts have focused on the problem of predicting a manufacturer's market share by using information on the quality of its product. Suppose that the following data are available on market share, in percentage (Y ), and product quality, on a scale of 0 to 100, determined by an objective evaluation procedure (X ):

X: 27 39 73 66 33 43 47 55 60 68 70 75 82
Y: 2 3 10 9 4 6 5 8 7 9 10 13 12

Estimate the simple linear regression relationship between market share and product quality rating.

Problem 3
For the data given below, regress one variable on the other. Is there an implication of causality, or are both variables affected by a third?

	Sample of annual transactions ($ millions)
Year	Credit card	Online debit card
2002	156	211
2003	204	280
2004	279	386
2005	472	551
2006	822	684
2007	1,213	905

Reference no: EM131381821

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