Summarize the Empirical Rule. What will be an ideal ...

[Medesa]

Summarize the Empirical Rule.
 
  What will be an ideal response?

Question 2

We calculate the five-period moving average for a time series for all time periods except the:
 
  A) first five periods.
  B) last five periods.
  C) first and last period.
  D) first two and last two periods.

[joneynes]

Answer to Question 1

For distributions that are bell-shaped and symmetrical:
a) Approximately 68 of observations will fall within  1 standard deviation of the mean.
b) Approximately 95 of observations will fall within  2 standard deviations of the mean.
c) Practically all observations will fall within  3 standard deviations of the mean

Answer to Question 2

D

[Medesa]

YES! Correct, THANKS for helping me on my review

[Viet Thy]

Wow, this really help