If you are using the method of least squares for fitting

If you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive yearly values,

a) what coded value do you assign to X for the first year in the series?

b) what coded value do you assign to X for the fifth year in the series?

c) what coded value do you assign to X for the most recent recorded year in the series?

d) what coded value do you assign to X if you want to project the trend and make a forecast five years beyond the last observed value?

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If you are using the method of least squares for fitting : if you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive

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