Any variable that is measured over time in sequential order is called a time series. Indicate ...

Any variable that is measured over time in sequential order is called a time series.
  Indicate whether the statement is true or false

Q. 2

A political analyst in Iowa surveys a random sample of registered Republicans and compares the results with those obtained from a random sample of registered Democrats . This would be an example of two independent samples.
  Indicate whether the statement is true or false

Q. 3

Smoothing time series data by the moving average method or exponential method is an attempt to dampen the effects of seasonal variation.
  Indicate whether the statement is true or false

Q. 4

The pooled-variances t-test requires that the two population variances need not be the same.
  Indicate whether the statement is true or false

Q. 5

The cyclical variation component of a time series measures the over-all general directional movement over a long period of time.
  Indicate whether the statement is true or false