This is all about Central Tendency. Solve what is required. Thank you and Godbless. Just type only the answers if possible do not handwritten.

The Department of Public Works and Highways is charged with maintaining all national highways in good condition. One good measure of road condition is the number of cracks per 100 meters of roadway. From the department's yearly sample of 30 different parts of roadway, these data were obtained: Interpret the values obtained. 14 17 19 18 20 20 24 23 22 26 23 23 28 24 23 24 25 25 23 26 28 26 29 26 28 27 28 29 30 30 Calculate the range, variance, and standard deviation for these data