Trend Analysis
Use the sales data given below to determine:
(a) The least squares trend line
(b) the predicted value for 1982 sales
|
Year |
Sales (units) |
Year |
Sales (units) |
|
1975 |
100 |
1979 |
139 |
|
1976 |
110 |
1980 |
152 |
|
1977 |
122 |
1981 |
164 |
|
1978 |
130 |
1982 |
? |
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