When a time series appears to be increasing at an increasing ...

[abc]

When a time series appears to be increasing at an increasing rate, such that percentage difference from value to value is constant, the appropriate model to fit is the
 
  A) linear trend. B) exponential trend. C) quadratic trend. D) None of the above.

Question 2

You need to decide whether you should invest in a particular stock. You would like to invest if the price is likely to rise in the long run. You have data on the daily mean price of this stock over the past 12 months. Your best action is to
 
  A) compute the MAD statistic. B) compute moving averages.
  C) perform exponential smoothing. D) estimate a least square trend model.

[bigcheese9]

Answer to Question 1

B

Answer to Question 2

D