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Statistics for Managers

Statistics

Quiz 3 :

Numerical Descriptive Measures

Quiz 3 :

Numerical Descriptive Measures

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When extreme values are present in a set of data, which of the following descriptive summary measures are most appropriate?
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Answer:

C

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In a perfectly symmetrical distribution
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Answer:

C

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In left-skewed distributions, which of the following is the correct statement?
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Answer:

B

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According to the empirical rule, if the data form a "bell-shaped" normal distribution, ________ percent of the observations will be contained within 2 standard deviations around the arithmetic mean.
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Which of the following is sensitive to extreme values?
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Which of the following is NOT sensitive to extreme values?
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According to the empirical rule, if the data form a "bell-shaped" normal distribution, ________ percent of the observations will be contained within 1 standard deviation around the arithmetic mean.
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Which measure of central tendency can be used for both numerical and categorical variables?
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In right-skewed distributions, which of the following is the correct statement?
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Which of the arithmetic mean, median, mode, and geometric mean are resistant measures of central tendency?
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Which of the following statements about the median is not true?
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In perfectly symmetrical distributions, which of the following is NOT a correct statement?
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Which of the following statistics is not a measure of central tendency?
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Which descriptive summary measures are considered to be resistant statistics?
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In a perfectly symmetrical bell-shaped "normal" distribution
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Which of the following is NOT a measure of central tendency?
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In a right-skewed distribution
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In general, which of the following descriptive summary measures cannot be easily approximated from a box-and-whisker plot?
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The smaller the spread of scores around the arithmetic mean,
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According to the empirical rule, if the data form a "bell-shaped" normal distribution, ________ percent of the observations will be contained within 3 standard deviations around the arithmetic mean.
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