If a sample of n = 30 people is selected and the sample correlation between two variables is r = 0.468, what is the test statistic value for testing whether the true population correlation coefficient is equal to zero?
A) About t = 2.80
B) About t = -.3.01
C) t = 2.0484
D) Can't be determined without knowing the level of significance for the test.
Question 2
In establishing a single exponential smoothing forecasting model, a starting point for the forecast value for period 1 is required. One method for arriving at this starting point is to use the first data point as the forecast for that period.
If we do that, then the first data point should be ignored when computing measures of forecast error. Indicate whether the statement is true or false
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