What is the purpose of this data display?

• To show the countries that participated in the Olympic Games

• To show how many people watched the Olympic Games

• To show how many tickets were bought for the Olympic Games

according to the data, how many people worked out for zero hours?

• One

• Two

• Three

How many students were greater than or equal to 60 inches tall?

• 21
• 11
• 17
• 6

What makes this data display misleading?

• The colours

• That there is no labels on the sections

• The inconsistent group amounts

• All of the above

Which interval shows the greatest number of pets?

• 15-19
• 0-4
• 5-9
• 10-14

A survey was conducted to determine the state of the physical and psychological health of high school students.

Some of the survey questions related to student stress levels and student absences due to illness. The data on these variables are displayed in the image.

Which of the following conclusions are appropriate to draw based on the figure above? (Choose all that apply.)

• stress leads to illness

• as stress levels increase, the number of absences tends to increase.

• many student absences are due to stress.

• there is an indirect relationship between stress and illness.

• there is a positive correlation between stress level and number of absences.

Where does the independent variable go on a graph?

• Horizontal axis

• Vertical Axis

• Line of best fit

• We don't graph it

Researchers conducted a study in which 10 participants went to a laboratory around dinner time. The researcher assigned students to one of two groups by flipping a coin. Half of the participants were assigned to a “large bowl” group, and half were assigned to a “small bowl” group. By luck of the draw, 4 men and 1 woman were in the “large bowl” group, and 4 women and 1 man were in the “small bowl” group. Participants were told they could take as much pasta as they wanted from a serving bowl in the middle of the table, which was kept at a nearly full level. Participants were encouraged to go back for as many helpings of pasta as they wanted. In order to determine how much food each participant actually ate, the researchers measured the weight of the food that each participant took, as well as the amount that the participants left in their bowls.

The amount of pasta (in grams) each participant ate is shown in the table. The difference between the average pasta taken by the large bowl and small bowl participants was statistically significant. Which of the following does that mean?

• There was a noticeable difference between the average pasta taken in the large bowl and small bowl groups.

• The difference between the amount of pasta taken in each group was very likely caused by the bowl size.

• The study is reliable. If you were to do it again, you would get the same results.

• There is less than a 5% chance that the difference in the groups' average was due to random chance.

A study was conducted to investigate the role of framing on concern for healthy eating. Each participant (N = 100) was randomly assigned to one of two conditions. In the first condition, the participants read an article indicating that obesity is a disease. Participants in the second condition read an article indicating that obesity is the result of personal behaviors and decisions.

Participants were then asked to indicate how important it would be for them to eat a healthy diet. Scores ranged from 1 (not very important) to 9 (very important). The results are presented in the table.

What is the most appropriate conclusion the researchers can draw about the relationship between the variables in the study?

Dr. Nguyen is studying the emotional effects of watching television (TV) news. After taking a pretest measuring mood, each of the 200 college students in her sample is randomly assigned to watch fifteen minutes of either good news on TV, bad news on TV, a funny TV show, or no TV

at all. Her participants then complete an identical posttest measure of mood that they completed at pretest. Results of her research appear in the graph. Consider all of the differences between bar heights to be significant.

Which of the following would be accurate conclusions from her research?

• Watching TV caused the tested college students' moods to change.

• Watching good news on TV causes the tested college students' mood to increase.

• If parents show their children a funny show before bed, it will cause the childrens moods to decrease.

• Watching a funny show caused the tested college students' moods to decrease.