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Describing data

Describing data - CD's 52 24 61 12 16 43 81 26 21 55 33 31...

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1 ) Patrons at a local restaruant are asked to rate the service as  excellent, good, fair, or poor.  The level of measurement is (3pts)   Nominal   Ordinal   Interval   Ratio Answer : Incorrec t Points: 2 2 ) A person's age, income height, and weight are all examples of   (3pts)   Quantitative variables   Qualitative Variables   Random Variables   Population variables Answer : Corre ct Points: 3 3 ) A set of data includes 75 observations.  How many classes would  you recommend for frequency distribution (3pts)   2   8   9

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7 Answer : Incorrec t Points: 0 Instructions Each section will contain a set of data.  You will be asked for multiple items from  each set. Problems A sample of college students revealed they owned the following number of
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Unformatted text preview: CD's: 52 24 61 12 16 43 81 26 21 55 33 31 32 45 22 44 41 2 9 32 • 4 ) • What is the mean of the sample? (5pts) Answer : 36.8 4 Points: 5 • 5 ) • What is the median of the sample? (5pts) Answer : 3 2 Points: 5 • 6 ) • What is the mode of the sample? (5pts) Answer : 3 2 Points: 5 • 7 ) • What is the Variance for the sample? (5pts) Answer : 290.4 7 Points: 4 • 8 ) • What is the Standard deviation for the sample? (5pts) Answer : 17.0 4 Points: 5 • 9 ) • What is the midrange for the sample? (5pts) Answer : 6 9 Points:...
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