ften, frequency distributions are reported using unequal class widths because the frequencies of some groups would otherwise be small or very rge. Consider the following data, which represent the daytime household temperature the thermostat is set to when someone is home for a andom sample of 741 households. Determine the class midpoint, if necessary, for each class and approximate the mean and standard deviation emperature. E Click the icon to view the frequency distribution for the daytime household temperature. Frequency distribution Temperature (°F) Frequency 61-64 35 65–67 62 68–69 191 70 191 71–72 123 73–76 87 77-80 52

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Often, frequency distributions are reported using unequal class widths because the frequencies of some groups would otherwise be small or very
large. Consider the following data, which represent the daytime household temperature the thermostat is set to when someone is home for a
random sample of 741 households. Determine the class midpoint, if necessary, for each class and approximate the mean and standard deviation
temperature.
Click the icon to view the frequency distribution for the daytime household temperature.
Frequency distribution
Temperature (°F)
Frequency
61-64
35
65-67
62
68-69
191
70
191
71-72
123
73–76
87
77-80
52
Transcribed Image Text:Often, frequency distributions are reported using unequal class widths because the frequencies of some groups would otherwise be small or very large. Consider the following data, which represent the daytime household temperature the thermostat is set to when someone is home for a random sample of 741 households. Determine the class midpoint, if necessary, for each class and approximate the mean and standard deviation temperature. Click the icon to view the frequency distribution for the daytime household temperature. Frequency distribution Temperature (°F) Frequency 61-64 35 65-67 62 68-69 191 70 191 71-72 123 73–76 87 77-80 52
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