1. a. $12 million
b. 1st quarter 1999
c. 3rd quarter 1997
d. 3rd quarter is winter, too cold for ice cream!
e. 1st quarter is summer and hot. People eat more ice cream.
f. Looking at first quarter sales: 1997-$16 million, 1998-$18 million and 1999-22 million obviously an increasing pattern.
g. $15 million
| 2. |
a,b. c. There would appear to be a cyclical or seasonal weekly pattern to this time series. The smoothed graph indicates a downward trend over the period. d. Because there are 7 days in a week! |
