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Question
Interaction exists in a multiple regression model when:
A) one independent variable affects the relationship between another independent variable and the dependent variable.
B) multicollinearity is present in a regression model.
C) the regression model is overall insignificant.
D) a polynomial model used.
Answer
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Related questions
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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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One way to improve the response rate for a survey is to administer the surveys directly to the respondents.
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Descriptive statistics allow a decision maker to reach a conclusion about a population based on a subset from the population.
Q:
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.
B) The stem and leaf diagram shows more information by showing the individual values.
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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?
A) A bar chart is usually constructed so that gaps exist between the bars.
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C) A histogram is usually constructed without gaps between the bars.
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Q:
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A) Quantitative data
B) Categorical data
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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.
D) use an ogive instead.
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A histogram is used to display which of the following characteristics for a quantitative variable?
A) The approximate center of the data
B) The spread in the data
C) The shape of the distribution
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What are the major categories of statistical tools that will be covered in this course?
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Which of the following statements is true?
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C) mode.
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