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Unformatted text preview: BA 240 W. Li Score: ___ of 10 QUIZ 2 Show your work clearly and completely. Round to the THIRD Decimal Place. Problem 1: Name:_______________________ Consider following sample of 10 quantitative measurements: 32 28 28 16 38 31 30 23 27 19 a) Calculate the Measures of Central Tendency, and use them to answer Question 1 in the Assessment. (1 point) b) Describe the shape using part a). Justify your answer. (1 point) c) Calculate the Five‐number Summary, and use them to answer Question 3 and 4 in the Assessment. (2 points) d) Use ∑ (x − x) 2 = 373.6 to calculate the variance and the standard deviation. (2 points) Variance = Standard Deviation = e) Find the z‐score for the Minimum. (1 point) f) Assume data is normal. Construct an interval that will include the middle 68.26% of the data set above. (2 points) Lower Limit = Upper Limit = g) Count how many data actually fall into the interval in part f), and what is the percentage of the data? (1 point) ...
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This note was uploaded on 07/28/2011 for the course STATISTICS BA 240 taught by Professor Winnieli during the Spring '11 term at Bellevue College.
 Spring '11
 WinnieLi
 Statistics

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