The u.s. department of agriculture
The u.s. department of agriculture.
The U.S. Department of Agriculture publishes statistics on the production of various types of food commodities by month. Shown here are the production figures on broccoli for January of a recent year through December of the next year. Use these data to compute 12-month centered moving averages (T C). Using these computed values, determine the seasonal effects (S I).
|
|
Broccoli |
|
Broccoli |
|
Month |
(million pounds) |
Month |
(million pounds) |
|
January (1st year) |
132.5 |
January (2nd year) |
104.9 |
|
February |
164.8 |
February |
99.3 |
|
March |
141.2 |
March |
102.0 |
|
April |
133.8 |
April |
122.4 |
|
May |
138.4 |
May |
112.1 |
|
June |
150.9 |
June |
108.4 |
|
July |
146.6 |
July |
119.0 |
|
August |
146.9 |
August |
119.0 |
|
September |
138.7 |
September |
114.9 |
|
October |
128.0 |
October |
106.0 |
|
November |
112.4 |
November |
111.7 |
|
December |
121.0 |
December |
112.3 |