Question 3
Select the answer that best fits the question with the assumption that the analysis assumptions are met unless specified.
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We have run a single replication of a very large factorial design (e.g., 20
Points out of
25.00
factors with 3 levels each). What is a way we can try to determine what factors
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and interactions matter most?
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Clients weight is taken before and after participating in the latest fitness craze
for a month. What is the simplest test to see if there is an effect of the fitness
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craze?
When we perform multiple non-orthogonal contrasts we must
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We counted the number of people who entered our store across the span of a
week in the morning, afternoon, and evening. What is the simplest test to see
if there is any difference in the frequency of people coming to our store at
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different times across days?
Our company is only interested in purchasing a software upgrade if it leads to
faster connectivity and data sharing. The old software's average processing
time is know and the new software is tested under various simulations. What
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is the simplest test to see if the new software is faster than the old software.
We offered 7 main course in our restaurant over the last month and have a
count of how many each has been ordered. What is the simplest test to
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determine if some courses are preferred over others?
Over the course of a week you have run an experiment. On each day the
same number of complete replications of the experiment have been
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performed. What is this kind of design called?
You find your dependent variable has a high degree of kurtosis. What is the
first way to try to fix it?
log the variable
We have three price points and three product colors and we have randomly
assigned combinations of price points and colors to focus groups who have
rated them on how likely they would be to purchase them. What is the
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simplest test we could use to see if there is any impact of price point, color, or
their interaction?
You have a design where you have 3 levels of one blocking variable, 3 levels
of another blocking variable, and 3 conditions. What is this kind of design
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called?
You have been conducting an experiment with 3 conditions and have done
testing over the period of a week. What is the simplest test to use to see if
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there is an impact of condition?