Refer to Data Set 13 in Appendix B. Compare the variation from the three different sets of measured voltage levels.

Refer to the indicated data set in Appendix B. Use computer software or a calculator to find the range, variance, and standard deviation.

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Data Set 13: Voltage Measurements From a Home All measurements are from the author's home. The voltage measure- ments are from the electricity supplied directly to the home, an inde- pendent Generac generator (model PP 5000), and an uninterruptible power supply (APC model CS 350) connected to the home power supply. STATDISK: Data set name is Voltage. Minitab: Worksheet name is VOLTAGE.MTW. Workbook name is VOLTAGE.XLS. Excel: TI-83/84 Plus: App name is VOLTAGE and the file names are the same as for text files. Text file names: Text file names are VHOME, VGEN, VUPS. Day Home (volts) Generator (volts) UPS (volts) 123.8 123.9 124.8 123.1 124.3 123.1 3 123.9 123.3 125.2 123.6 4 124.5 123.6 5 123.4 125.1 123.6 123.3 124.8 123.7 7 123.3 125.1 125.0 123.7 123.6 123.5 8 123.6 9 124.8 123.6 10 123.5 124.7 123.8 11 123.5 124.5 123.7 12 123.7 125.2 123.8 13 123.6 124.4 123.5 14 123.7 124.7 123.7 15 16 123.9 124.9 123.0 124.0 124.5 123.8 124.8 124.8 17 124.2 123.8 123.1 123.7 123.7 123.8 18 123.9 19 123.8 124.5 20 123.8 124.6 21 124.0 125.0 124.7 22 123.9 123.8 123.7 23 123.6 124.9 24 123.5 123.8 124.9 124.7 124.2 25 123.4 123.7 26 123.4 123.8 123.4 123.4 27 124.7 124.8 124.4 124.6 123.8 28 123.8 29 123.3 123.9 30 123.3 123.8 31 32 123.5 124.4 123.9 123.6 124.0 123.9 33 123.8 124.7 123.9 34 123.9 124.4 123.9 35 123.9 124.6 123.6 123.8 123.2 123.1 123.0 122.9 36 124.6 124.6 37 123.9 123.7 123.8 123.8 38 124.8 39 124.3 40 124.0 123.0