THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 30

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The table below shows the quarterly sales of Dragon Ball Z action figures in a toy store.The forecaster uses the double exponential smoothing model to determine the forecast for future periods.
Given: α = 0.7 and β = 0.3

-What is the value of the mean absolute percentage error?

• A)46.57
• B)19.96
• C)75.46
• D)26.56

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Definitions:

Poisson Probability

The probability of a given number of events happening in a fixed interval of time or space when these events occur with a known constant mean rate and independently of the time since the last event.

Binomial Probabilities

The probabilities of achieving a specific number of successes in a fixed number of Bernoulli trials, characterized by only two possible outcomes.

Poisson Random Variable

A variable that follows the Poisson distribution, mainly used to model the number of times an event happens in a fixed interval of time or space.

Discrete Random Variable

A type of random variable that assumes a countable number of distinct values, often representing outcomes of a random process.