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q01_sol_1_

# q01_sol_1_ - 3 Find the lower and upper quartile for the...

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ISyE2028A, Fall 2010 Solutions to Quiz 1 1. Construct a stem-and-leaf diagram for the following data set. [3 points] 41 41 42 42 42 42 42 43 44 54 55 58 62 66 66 67 68 75 31 35 36 36 37 38 40 40 40 45 46 46 47 48 48 48 51 54 ANSWER Frequency Stem Leaves 6 3 1 5 6 6 7 8 (19) 4 0 0 0 1 1 2 2 2 2 2 3 4 5 6 6 7 8 8 8 11 5 1 4 4 5 8 6 6 2 6 6 7 8 1 7 5 2. Find the median for the above dataset. [1 point] ANSWER (44 + 45)/2=44.5.
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Unformatted text preview: 3. Find the lower and upper quartile for the above dataset. [1 point] ANSWER lower quartile = 40 + (1/4)*(41-40) = 40.25; upper quartile = 54 + (3/4)*(54-54) = 54 4. Find the inter-quartile range for the above dataset. [1 point] ANSWER IQR = 54 – 40.25 = 13.75. 5. Draw a box-plot for the above dataset. [2 point] ANSWER See lecture notes. [2 points automatically for submission. Total is 10.]...
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