Biology Forums - Study Force

Using exponential smoothing, the demand forecast for time period 10 equals the demand forecast for time period 9 plus
 a.  times (the demand forecast for time period 8)
  b.  times (the error in the demand forecast for time period 9)
  c.  times (the observed demand in time period 9)
  d.  times (the demand forecast for time period 9)

Q. 2

Graphical techniques should not be used to present data if accurate tabular forms for the same data are available.
  Indicate whether the statement is true or false

Q. 3

A graph showing the probability of accepting the lot as a function of the percent defective in the lot is _____.
 a. a power curve
  b. a control chart
  c. an operating characteristic curve
  d. None of the answers is correct.

Q. 4

Which of the following forecasting methods puts the least weight on the most recent time series value?
 a. exponential smoothing with  = .3
  b. exponential smoothing with  = .2
  c. moving average using the most recent 4 periods
  d. moving average using the most recent 3 periods

Q. 5

Can a scatter diagram be used to explore the relationship between two nominal variables? Explain why or why not.

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