Time series data are often graphically depicted on a line chart, ...

[KWilfred]

Time series data are often graphically depicted on a line chart, which is a plot of the variable of interest over time.
  Indicate whether the statement is true or false

Question 2

What is the Durbin-Watson test for autocorrelation, and how can it be useful in evaluating the relevance of a given regression model that has been fitted to a set of time series data?

[leeeep]

Answer to Question 1

T

Answer to Question 2

The Durbin-Watson test is used to detect the presence of autocorrelation between adjacent residuals. If the test detects the presence of autocorrelation, there is the possibility in the given model that important variables may have been omitted. The inclusion of these variables can reduce the presence of autocorrelation and enhance the quality of confidence and prediction intervals.