If some natural relationship exists between each pair of ...

[rachel9]

If some natural relationship exists between each pair of observations that provides a logical reason to compare the first observation of sample 1 with the first observation of sample 2, the second observation of sample 1 with the second observation of sample 2, and so on, the samples are referred to as:
 a. matched pairs.
  b. independent samples.
  c. nonrandom samples.
  d. None of these choices.

Question 2

The time series component that reflects the irregular changes in a time series that are not caused by any other component, and tends to hide the existence of the other more predictable components, is called:
 a. long-term trend c. seasonal variation
  b. cyclical variation d. random variation

[aloop]

Answer to Question 1

A

Answer to Question 2

D

[rachel9]

Excellent

[covalentbond]

Thanks for the timely response, appreciate it