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If the Durbin-Watson statistic is greater than 3, then: spurious regression is likely an issue. non-stationarity...

If the Durbin-Watson statistic is greater than 3, then:

spurious regression is likely an issue.

non-stationarity is likely an issue.

negative serial correlation is likely an issue.

positive serial correlation is likely an issue.

math   Statistics-And-Probability   
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If durbin Watson statistic greater than 3 then negative serial correlation is likely an issue

The Durbin-Watson statistic will always have a value between 0 and 4. A value of 2.0 means that there is no autocorrelation detected in the sample. Values from 0 to less than 2 indicate positive autocorrelation and values from from 2 to 4 indicate negative autocorrelation.

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