Answers

Here are the answers to the preceding questions:

1. It is where past data reflects present data.
2. It has periodic waves and appears to be predictable.
3. The data must be autocorrelated.
4. It has to be a value of less than 2. If it is near 2, we probably have to accept the null hypothesis, as the data has no autocorrelation.
5. This test uses residuals or errors to see whether the data has autocorrelation.