please help me with this.

Variability problems 1. The following n = 12 scores are listed in order from smallest to largest. For this sample, 1, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6, 7 a. Find the range and interquartile range b. Now, change the score of X = 7 to X = 27 and find the new range and interquartile range. c. Describe how one extreme score influences the range and the interquartile range