# Project #81814 - Statistics

1. The following distribution represents the demands for electricity on Long Island for a sample of two months

Damand for Electricity

(measured in KW Hours)

20, 25, 27, 30, 33, 37, 40, 35, 32, 29, 26, 23, 22, 24, 28, 31, 32, 37, 35, 34, 30, 27, 24, 25, 28, 29, 33, 34, 30, 28, 26, 31, 29, 30, 33, 32, 34, 30, 31, 27, 26, 28, 29, 30, 31, 34, 32, 29, 31, 27, 28, 26, 31, 33, 34, 29, 31, 28, 26, 30.

a) Construct a frequency distribution table using 7 classes. Include within the table: classes, frequencies, class boundaries, class marks, and relative precentage.

b) Using only the table, is it possible to determine the number of days the demand for electricity was:

i) at least 26 KWH

ii) less than 31 KWH

iii) more than 33 KWH

iv) exactly 29 KWH

c) Construct a Histogram

2. Cholesterol Levels (expressed as milligrams of cholesterol per 100 milliliters of blood)

263, 258, 240, 233, 225, 222, 199, 282, 239, 236, 232, 283, 200, 212, 225, 235, 240, 258, 263, 274, 250, 259, 241, 237, 226, 213, 269, 199, 253, 201, 265, 226, 238, 242, 259, 233, 238, 229, 215, 202, 319, 277, 229, 239, 243, 248, 245, 219, 276, 246

To construct a stem-and-leaf display for the 50 cholesterol levels.

 Subject Mathematics Due By (Pacific Time) 09/15/2015 01:00 pm
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