1)A nutritionist obtains the amounts of sugar (grams) from 10 different cereals, including Cheerios, Corn Flakes, Froot Loops, and seven others. The amounts appear below: 6, 24, 33, 47, 43, 7, 41, 23, 44, 39. Calculate the standard deviation of the amount of sugar in the cereal consumed by the population of all Puerto Ricans who eat cereal (Triola , 2004)

2)The monthly salary of five (5) employees of a pharmaceutical company was as follows: $ 3,667, $ 4,935, $ 3,876, $ 4,700 and $ 3,178. What should the value of the standard deviation be for those data?

3)The waiting times of eight (8) patients to be seen in a medical office, expressed in minutes, were the following: 34, 46, 42, 29, 31, 34, 51, 63. Calculate the following: range, variance, and standard deviation.

4)The ages of the 10 best actresses in Hollywood are: 33, 48, 51, 35, 57, 67, 52, 44, 48, 70. Use the 10 ages of the best actresses to calculate the interquartile range.