pracfinalfall2011

# pracfinalfall2011 - Practice Final Statistics 371 Fall 2011...

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5. I have drawn a histogram for 500 obser- vations. One of the rectangles has end- points of 1.00 and 3.00, and a height of 0.20. For each of the three situations be- low, determine how many observations are in this class interval [1.00 to 3.00), with the usual endpoint convention. (a) If it is a frequency histogram. (b) If it is a relative frequency histogram. (c) If it is a density scale histogram. 6. I have drawn a histogram for 800 obser- vations. One of the rectangles has end- points of 0.20 and 0.30, and a height of 5. For each of the three situations below, de- termine how many observations are in this class interval [0.20 to 0.30), with the usual endpoint convention. (a) If it is a frequency histogram. (b) If it is a relative frequency histogram. (c) If it is a density scale histogram. 7. I observed 50 i.i.d. trials. Below are my 50 sorted observations. 0.02 0.04 0.14 0.18 0.32 0.44 0.46 0.68 0.86 1.04 1.06 1.26 1.32 1.38 1.42 1.50 1.54 1.56 1.60 1.74 2.26 2.40 2.58 2.62 2.72 2.94 3.26 3.38 3.54 3.56 3.76 3.80 3.94 4.34 4.56 5.06 5.50 5.90 6.02 6.08 6.20 6.52 6.84 8.52 8.60 10.00 10.42 10.84 x (49) 11.86 (a) Draw a density scale histogram of these data. Use 0.00–2.00, 2.00–6.00, and 6.00–12.00 as your class inter- vals. Clearly label the height and end- points of each of the rectangles.
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pracfinalfall2011 - Practice Final Statistics 371 Fall 2011...

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