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 728 households. Determine the class midpoint, if necessary, for each class and approximate the m and standard deviation temperature. Click the icon to view the frequency distribution for the daytime household temperature. Class Class Midpoint 61-64 65-67 68-69 70 71-72 73-76 77-80 (Round to one decimal place as needed.) Frequency distribution Temperature (F) Frequency 61-64 32 65-67 61 68-69 190 70 190 71-72 117 73-76 84 77-80 54 Print Done -X