Device uptime (hours per day) Day1 8, Day2 7.5, Day3 9, Day4 8.2. What is the average uptime across the four days?

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Multiple Choice

Device uptime (hours per day) Day1 8, Day2 7.5, Day3 9, Day4 8.2. What is the average uptime across the four days?

Explanation:
Calculating the average uptime means finding the arithmetic mean of the daily uptimes. Add the four days: 8 + 7.5 + 9 + 8.2 = 32.7 total hours. Divide by the number of days (4): 32.7 ÷ 4 = 8.175 hours per day on average. Rounded to two decimals, that’s 8.18 hours. This is the best result because it summarizes all days equally to reflect typical daily performance. The other numbers would come from rounding or altering the calculation in ways that don’t use every data point exactly.

Calculating the average uptime means finding the arithmetic mean of the daily uptimes. Add the four days: 8 + 7.5 + 9 + 8.2 = 32.7 total hours. Divide by the number of days (4): 32.7 ÷ 4 = 8.175 hours per day on average. Rounded to two decimals, that’s 8.18 hours. This is the best result because it summarizes all days equally to reflect typical daily performance. The other numbers would come from rounding or altering the calculation in ways that don’t use every data point exactly.

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