Assignment:
Pizza Subway Fare Costs: Finding se Use Formula 10-6 to find the standard error of estimate se for the paired pizza subway fare data listed in Table 10-1 in the Chapter Problem.
Formula 10-6 se = √Σy2 - b0Σy - b1Σxy/ n-2
Table 10-1 Cost of a Slice of Pizza, Subway Fare, and the CPI
|
Year
|
1960
|
1973
|
1986
|
1995
|
2002
|
2003
|
|
Cost of Pizza
|
0.15
|
0.35
|
1.00
|
1.25
|
1.75
|
2.00
|
|
Subway Fare
|
0.15
|
0.35
|
1.00
|
1.35
|
1.50
|
2.00
|
|
CPI
|
30.2
|
48.3
|
112.3
|
162.2
|
191.9
|
197.8
|