Identify Highest/Lowest Numbers: Identify the highest and lowest numbers in the data set.Data set: 2,4,−9,−5,4,2,9The highest number is 9.The lowest number is −9.
Calculate Range: Calculate the range by subtracting the lowest number from the highest number.Range = Highest number - Lowest numberRange = 9−(−9)Range = 9+9Range = 18