Which of the following is true about deseasonalizing data? A) ...

[jhjkgdfhk]

Which of the following is true about deseasonalizing data?
 
  A) The sum of the seasonal indexes should be 1.0.
  B) The time series is deseasonalized by multiplying each value by its seasonal index.
  C) Deseasonalizing a time series reduces autocorrelation.
  D) Deseasonalizing a time series can make it easier to see a trend.

Question 2

The Boxer Company has been in business since 1998. The following sales data are recorded by quarter for the years 2010-2012.
 
  Quarter Sales
  Winter 10 50
  Spring 10 70
  Summer 10 100
  Fall 10 60
  Winter 11 60
  Spring 11 70
  Summer 11 120
  Fall 11 80
  Winter 12 70
  Spring 12 90
  Summer 12 140
  Fall 12 100
 
  Which of the following time-series components are present in these data?
  A) Trend component
  B) Seasonal component
  C) Random component
  D) All of the above

[underwood14]

Answer to Question 1

D

Answer to Question 2

D

[jhjkgdfhk]

TYSM

[diana chang]

Excellent