Exam 3: Numerical Descriptive Measures

SCENARIO 3-3 The ordered array below represents the number of vitamin supplements sold by a health food store in a sample of 16 days. 19, 19, 20, 20, 22, 23, 25, 26, 27, 30, 33, 34, 35, 36, 38, 41 Note: For this sample, the sum of the values is 448, and the sum of the squared differences between each value and the mean is 812. -Referring to Scenario 3-3,the variance of the number of vitamin supplements sold in this sample is_____ .

In left-skewed distributions,the distance from the smallest value to Q₁ is greater than the distance from Q₃ to the largest value.

The median of the values 3.4,4.7,1.9,7.6,and 6.5 is 1.9.

SCENARIO 3-3 The ordered array below represents the number of vitamin supplements sold by a health food store in a sample of 16 days. 19, 19, 20, 20, 22, 23, 25, 26, 27, 30, 33, 34, 35, 36, 38, 41 Note: For this sample, the sum of the values is 448, and the sum of the squared differences between each value and the mean is 812. -Referring to Scenario 3-3,the range of the number of vitamin supplements sold in this sample is_____.

SCENARIO 3-13 Energy drink consumption has continued to gain in popularity since the 1997 debut of Red Bull,the current leader in the energy drink market.Given below are the exam scores and the number of 12- ounce energy drinks consumed within a week prior to the exam of 10 college students. -Referring to Scenario 3-13,for a student who has consumed a high number of energy drinks within the week prior to the exam,you will expect his/her exam score to

SCENARIO 3-5 The rate of return of a Fortune 500 company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%,7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34% -Referring to Scenario 3-4,construct a boxplot of this sample.

SCENARIO 3-3 The ordered array below represents the number of vitamin supplements sold by a health food store in a sample of 16 days. 19, 19, 20, 20, 22, 23, 25, 26, 27, 30, 33, 34, 35, 36, 38, 41 Note: For this sample, the sum of the values is 448, and the sum of the squared differences between each value and the mean is 812. -Referring to Scenario 3-3,the median number of vitamin supplements sold in this sample is_____.