Comparing Populations Answers

A business owner collected data on the people working for her company. She determined the average number of minutes each employee spent on breaks during an average workday. The data, broken up by gender, is shown below.Number of Minutes Women Spend on BreaksNumber of Minutes Men Spend on BreaksThe business owner uses the median and IQR to determine the center and variability of the data sets. Which best describes the comparison?

Takiya recorded the heights of two sets of plants, one set planted in the shade and one set planted in full sun. Her data are shown in the plots below.Which best explains the variability of the sets?

The box plots below show the distribution of salaries, in thousands, among employees of two small companies. Salaries in Dollars at Company 1Salaries in Dollars at Company 2Which measures of center and variability would be best to use when making comparisons of the two data sets?

Ayana and Tabitha recorded the amount of time spent on homework on ten school days. Graphs of their data are shown.Ayana’s Time Spent on HomeworkTabitha’s Time Spent on HomeworkWhich best explains who spends more time on homework?

A hockey coach recorded the number of shots taken by the home team and the number taken by the visiting team in 20 games. He displayed the results in the box plots below. Number of Shots Taken by Home Team PlayersNumber of Shots Taken by Visiting Team PlayersWhich describes an inference that the coach might make after comparing the medians of the two data sets?

The box plots below show the distribution of grades in one class on two tests. Test 1 GradesTest 2 GradesWhich measures of center and variability would be best to use when making comparisons of the two data sets?

Two baseball coaches recorded the number of hits each player had during practice. They displayed the results in the box plots below.Number of Hits by Team 1 PlayersNumber of Hits by Team 2 PlayersThe coaches determined the mean and MAD from the raw data and used that information to compare the two plots. They determined there is more variability in the number of hits per player on Team 2 than on Team 1. Which best describes this conclusion?

The sets of data below show the heights, in inches, of students in two different preschool classes.Class 1Class 2The teachers of the two classes want to compare the heights of their students. Which statements about the data sets are accurate? Select three options.

Latisha determined the approximate amount of time each student in her homeroom class spent outside on a sunny day and on a rainy day. The dot plots below show her results. Sunny DayCloudy DayWhich measures of center and variability can be used to most accurately compare the two data sets?

The monthly energy use, in kilowatt hours, for two neighbors is shown in the box plots below. Neighbor 1Neighbor 2Which statements accurately compare the two data sets? Select three options.