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Question
A fundamental distinction between trend projection and linear regression is that:
A) trend projection uses least squares while linear regression does not.
B) only linear regression can have a negative slope.
C) in trend projection the independent variable is time; in linear regression the independent variable need not be time, but can be any variable with explanatory power.
D) trend projection can be a function of several variables, while linear regression can only be a function of one variable.
E) trend projection uses two smoothing constants, not just one.
Answer
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Related questions
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Q:
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A) higher capital cost
B) higher wage rates
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Q:
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A) estimate the trend line.
B) eliminate forecast errors.
C) measure forecast accuracy.
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Q:
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A) increased quality
B) better response to customer orders
C) faster response to market changes
D) improved utilization of facilities and labor
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A) it originates from the external customer.
B) there is a deep bill of material.
C) the finished products are mostly services (rather than goods).
D) there is a clearly identifiable parent.
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Q:
Weight Day
Package 1
Package 2
Package 3
Package 4 Monday
23
22
23
24 Tuesday
23
21
19
21 Wednesday
20
19
20
21 Thursday
18
19
20
19 Friday
18
20
22
20 (a) If he sets an upper control limit of 21 and a lower control limit of 19 around the target value of twenty ounces, the control chart is based on what value of z?
(b) With the UCL and LCL of part a, what do you conclude about this processis it in control?
Answer:
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What is the difference between natural and assignable causes of variation?
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A) 18.18% of the throughput time
B) 100% of the throughput time
C) 550% of the throughput time
D) 50% of the throughput time
E) 1.82% of the throughput time