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Question
Which of the following time-series components can be identified when a company has 12 weeks of data beginning January and extending through March?
A) Seasonal component
B) Random component
C) Trend component
D) Both B and C
Answer
This answer is hidden. It contains 10 characters.
Related questions
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Data gathered from a structured interview is generally easier to analyze than data collected from an unstructured interview.
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Data collected using open-end questions is generally easier to analyze than data collected from closed-end questions.
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When an interviewer asks a specified series of questions in the course of a personal interview, he/she is conducting an unstructured interview.
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Descriptive statistics allow a decision maker to reach a conclusion about a population based on a subset from the population.
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A stem and leaf diagram is an alternative to using:
A) a pie chart.
B) a bar chart.
C) a histogram.
D) an ogive.
Q:
Which of the following is true about the difference between stem and leaf diagrams and histograms?
A) There is no difference.
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D) The stem and leaf diagram shows less information than a histogram.
Q:
Which of the following is a false statement?
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In forming the classes for a frequency distribution and histogram, suppose there were a number of empty classes. You should:
A) increase the class width.
B) decrease the class width.
C) keep the current class width.
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A histogram is used to display which of the following characteristics for a quantitative variable?
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B) The spread in the data
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Which of the following statements is true?
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Suppose the standard deviation for a given sample is known to be 20. If the data in the sample are doubled, the standard deviation will be 40.