Range of 10, 2, 15, 8?

Explanation

• Range is the largest value minus the smallest value: 15 − 2 = 13.
• Sorting the data as 2, 8, 10, 15 makes both extremes easy to spot.
• Only the two extreme values matter, so the middle numbers 8 and 10 do not change the range.
• Option D 15 is just the highest number, not the difference between the highest and lowest.
• Because it depends on the extremes alone, the range is easily distorted by one unusually large or small reading.