In: Statistics and Probability
PepsiCo Revenues ($ millions), 2005–2010 | ||||||
Quarter | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
Qtr1 | 6,585 | 7,205 | 7,350 | 8,333 | 8,263 | 9,368 |
Qtr2 | 7,697 | 8,599 | 9,607 | 10,945 | 10,592 | 14,801 |
Qtr3 | 8,184 | 8,950 | 10,171 | 11,244 | 11,080 | 15,514 |
Qtr4 | 10,096 | 10,383 | 12,346 | 12,729 | 13,297 |
18,155 |
(b) State the model found when performing a regression using seasonal binaries. (A negative value should be indicated by a minus sign. Round your answers to 4 decimal places.
yt =___ + _____t +_____ Q1 +_____ Q2 +______ Q3
data
y | t | q1 | q2 | q3 |
6585 | 1 | 1 | 0 | 0 |
7697 | 2 | 0 | 1 | 0 |
8184 | 3 | 0 | 0 | 1 |
10096 | 4 | 0 | 0 | 0 |
7205 | 5 | 1 | 0 | 0 |
8599 | 6 | 0 | 1 | 0 |
8950 | 7 | 0 | 0 | 1 |
10383 | 8 | 0 | 0 | 0 |
7350 | 9 | 1 | 0 | 0 |
9607 | 10 | 0 | 1 | 0 |
10171 | 11 | 0 | 0 | 1 |
12346 | 12 | 0 | 0 | 0 |
8,333 | 13 | 1 | 0 | 0 |
10,945 | 14 | 0 | 1 | 0 |
11244 | 15 | 0 | 0 | 1 |
12729 | 16 | 0 | 0 | 0 |
8263 | 17 | 1 | 0 | 0 |
10592 | 18 | 0 | 1 | 0 |
11080 | 19 | 0 | 0 | 1 |
13297 | 20 | 0 | 0 | 0 |
9,368 | 21 | 1 | 0 | 0 |
14,801 | 22 | 0 | 1 | 0 |
15,514 | 23 | 0 | 0 | 1 |
18,155 | 24 | 0 | 0 | 0 |
SUMMARY OUTPUT | |||||
Regression Statistics | |||||
Multiple R | 0.927608978 | ||||
R Square | 0.860458416 | ||||
Adjusted R Square | 0.83108124 | ||||
Standard Error | 1171.697178 | ||||
Observations | 24 | ||||
ANOVA | |||||
df | SS | MS | F | Significance F | |
Regression | 4 | 160846126.6 | 40211531.64 | 29.29003209 | 6.8748E-08 |
Residual | 19 | 26084611.27 | 1372874.277 | ||
Total | 23 | 186930737.8 | |||
Coefficients | Standard Error | t Stat | P-value | Lower 95% | |
Intercept | 8973.2833 | 684.8834778 | 13.1019124 | 5.79529E-11 | 7539.80574 |
t | 275.7893 | 35.01114972 | 7.877184494 | 2.10729E-07 | 202.5101072 |
q1 | -4156.2988 | 684.5851186 | -6.071266665 | 7.72107E-06 | -5589.15193 |
q2 | -1909.2548 | 680.0940241 | -2.807339418 | 0.011242418 | -3332.707914 |
q3 | -1701.3774 | 677.3850749 | -2.511684187 | 0.021211076 | -3119.160637 |
y^= 8973.2833 + 275.7893 T -4156.2988 Q1 -1909.2548 Q2 -1701.3774 Q3