Question 1

Based on what you learned about data variation, which data do you think has the greatest variation: income from a simple random sample of 500 adults chosen from the general population or income from a simple random sample of 500 Statistics teachers? Why? (Triola, 2013)

Question # 2

A nutritionist gets the amounts of sugar (grams) from 10 different cereals, including Cheerios, Corn Flakes, Froot Loops, and seven others. The amounts appear below: 3, 24, 30, 47, 43, 7, 47, 13, 44, 39. Calculate the standard deviation of the amount of cereal sugar consumed by the population of all Puerto Ricans who eat cereal (Triola , 2004).

Question # 3

The monthly salary of five (5) employees of a pharmaceutical company was as follows for each: $ 3,567, $ 4,235, $ 3,876, $ 4,100 and $ 3,278. What should be the value of the standard deviation for those data?

Question # 4

The waiting times of eight (8) patients to be seen in a medical office, expressed in minutes, were the following: 34, 56, 48, 29, 33, 44, 51, 65. Calculate the following: range, variance and deviation standard.

Question # 5

The ages of the 10 best actresses in Hollywood are as follows: 32, 48, 51, 63, 57, 60, 52, 54, 48, 71. Use the 10 ages of the best actresses to calculate the interquartile range.

Question # 6

Use the following sample data to calculate the coefficient of variation for each sample; then compare the results. (6 points) Weight of students of both sexes at NUC University: 132, 185, 167, 220, 155, 141, 150 Size in inches of babies at birth: 12, 15.3, 11, 10, 16, 13.5, 14.8

Question # 7

The frequency distribution presented describes the speed at which some young people drove to get to take their classes at the university. These young people were driving on a road with a speed limit of 35 mi / h. Find the variance and standard deviation. (6 points)

VelocityFrequency

42-4525

46-4916

50-538

54-574

58-612

Question # 8

The following sample data are presented: 1.8, 1.9, 1.8, 2.4, 5.1, 3.1, 5.5, 5.1, 8.3, 13.7, 5.3, 4.9, 3.7, 3.8, 9.8. Calculate the following:

a) mean (3 points)

b) mode (2 points)

c) median (2 points)

d) mean axis (4 points)

e) range (2 points)

f) variance (4 points)

g) deviation standard (2 points)