Variability Answers

Gregorio took two tests. Find his z-score for each test. (Remember: The number of standard deviations between a score and the mean score is indicated by a z-score.) On which did he score better compared with others in his class? Test ATest BGregorio’s score6270Mean score8090Standard deviation610

A student takes ten exams during a semester and receives the following grades: 90, 85, 97, 76, 89, 58, 82, 102, 70, and 67. Find the five-number summary used in a boxplot. Which boxplot best represents the data? a. b. c. d. Please select the best answer from the choices provided

Compute the standard deviation of the data set. Round to the nearest hundredth, if needed. 4.9, 4.9, 9.9, 9.9, 14.9

The table below shows the scores on a science test. John 75 Brett 80 Elizabeth 90 Cindy 100 Jake 75 Kenji 85 Rick 80 Joy 80 Raul 90 Suni 85 Make a visual display of the scores. a. c. b. d. Please select the best answer from the choices provided

The table below shows the scores on a math test.David75Aaron75Ashley60Gina75Andrew75Kei95Monica100Anna60Lucas75Jennifer65

A boxplot helps to visualize the variability of a distribution. Five statistics form a boxplot, often referred to as the five-number summary for the distribution. How much of the data in a boxplot is below the third quartile?

Determine the standard deviation by filling in the table as part of your calculation. Consider the following data 6, 6, 10, 8, 10, 8

On a box-and-whiskers plot, what does line segment 2 represent?

Use the box-and-whiskers plots below to answer questions about the math test scores of two different classes. Which class had the higher median score? Which class, as a whole, scored better on the test?

The table below shows the scores on a math test. David 75 Aaron 75 Ashley 60 Gina 75 Andrew 75 Kei 95 Monica 100 Anna 60 Lucas 75 Jennifer 65 Make a visual display of the scores. a. c. b. d. Please select the best answer from the choices provided