Gradual shifting of a time series to relatively higher or lower ...

[FButt]

Gradual shifting of a time series to relatively higher or lower values over a long period of time is called
 a. periodicity.
  b. cycles.
  c. seasonality.
  d. trend.

Question 2

When two variables tend to move in opposite directions, yet still form a linear pattern, how do you describe their relationship?
 a. A positive linear relationship.
  b. A negative linear relationship.
  c. A proportional inverse relationship.
  d. None of these choices.

[debra928]

Answer to Question 1

D

Answer to Question 2

B