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Critical Thinking Forecasting
Consider a case where demand follows a repeating pattern of medium-low-medium-high-medium-low-medium-high-etc, where the difference between low and med is 5 units, and the difference between med and high is 5 units.
If an exponential smoothing forecasting model was used with infiniti=1, then:
a) What would the Cumulative Forecast Error (CFE) be over a twenty-day interval? Explain in words more than showing the calculation, why is the result like this.
b) What would the Mean Absolute Deviation (MAD) be, over twenty-day interval? Explain it in words of why the result is as it is
About 95% are between 500 +- 200; i.e. between 300 and 700 Where is the data located? Where is the "middle" of the data? How variable are the data? How spread out about the "middle" are the data?
define population and sampling unit for selecting a random samplw in each of the following cases hundred voters from a
Sample of 1500 voters was taken and the number who are voting yes is recorded. What is the probability that more than 50% of those 1500 vote yes?
The first three digits of a university telphone exchange are 452. if all the sequences of the remaining four digits are equally likely, what is the probability that a randomly selected universtiy phone number contains seven distinct digits?
when running an analysis of variance anova two-factor replication two-way test you get a p-value for the interaction
Simple Linear Regression
customers arrive at a single server facility at poisson rate of 40 per hour. when two or fewer customers are present a
If she actually has 55% of the total vote, what is the probability of getting a sample proportion this small or smaller? Do you think she actually has 55% of the vote? Why or why not?
the 10 year survival rate for bladder cancer is approximately 50. if 20 people who have bladder cancer are properly
a trucking firm has trucks that average a payload of 31.5 tons and a standard deviation of 3.75 tons. an accounting
the high school dropout rate in the state in the state for the year 2000 was 10.8 one school district who adopted the
A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink.
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