Question
Consider this table and graph showing the value of crustacean exports over an eight-year period. a....
Consider this table and graph showing the value of crustacean exports over an
eight-year period.
a. In which two years were there spikes? (Level 1, Sta3.2.1.14)
b. Calculate the moving means of order 3 for this data. (Level 2, Sta3.2.2.3)
c. Draw the moving mean graph. (level 3, Sta3.2.3.2)
1. Consider this table and graph showing the value of crustacean exports over an eight-year period. Year Value of exports (Sm) 1984/85 79.2 1985/86 85.5 1986/87 108.3 1987/88 89.0 1988/89 73.7 1989/90 84.9 1990/91 87.4 1991/92 117.9 a. In which two years were there spikes? (Level 1, Sta3.2.1.14) b. Calculate the moving means of order 3 for this data. (Level 2, Sta3.2.2.3) c. Draw the moving mean graph. (level 3, Sta3.2.3.2)
Answers
(a) 1986/87 and 1991/92
(b)
Period Demand Forecast Period 1 79.2 Period 2 85.5 Period 3 108.3 Period 4 89 91 Period 5 73.7 94.26667 Period 6 84.9 90.33333 Period 7 87.4 82.53333 Period 8 117.9 82 (c) The graph is:
Forecasting 140 120 100 80 Value 60 40 20 0 1 2 3 4 5 6 7 8 Time Demand Forecast
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