Which of the following is the mean hydrocarbon emissions (hc) value?

Which of the following is the mean hydrocarbon emissions (hc) value?

• A. 0.003 g/km
• B. 0.110 g/km
• C. 0.053 g/km
• D. 0.500 g/km

Answer: (C)

The mean is the average value you get when you add up all the hydrocarbon emission readings and divide by how many readings there are. For this dataset, doing that calculation gives 0.053 g/km, which represents the typical hydrocarbon emission per kilometer across all samples. It’s a measure of central tendency, giving a single representative value rather than the emission of any individual measurement. The other numbers could be individual readings or extremes, whereas 0.053 g/km is the overall average.

The mean is the average value you get when you add up all the hydrocarbon emission readings and divide by how many readings there are. For this dataset, doing that calculation gives 0.053 g/km, which represents the typical hydrocarbon emission per kilometer across all samples. It’s a measure of central tendency, giving a single representative value rather than the emission of any individual measurement. The other numbers could be individual readings or extremes, whereas 0.053 g/km is the overall average.