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Praxis Mathematics: Interpreting Statistics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. Using the box plot provided, what is the vertical line circled in red?

Question 2 2.

Find the sample variance of the following data set:

2, 3, 4, 7, 10, 1, 2

Question 3 3. The null hypothesis is a prediction that _____.

Question 4 4. What do we call two sets of variables that can change and are compared to find relationships?

Question 5 5. When you find a relationship in bivariate data, you are looking at a positive or a negative _____.

Page 2

Question 6 6. Using the bar graph, 'Top Ten U.S. Rentals in 1999', about how much money did the movie American Pie have in revenue?

Question 7 7. A researcher asks two groups of people to look at either food or crayons and then rate their level of hunger. The difference between the average hunger ratings is not significant. The researcher can conclude that:

Question 8 8. What is the relationship between two sets of variables used to describe or predict information?

Question 9 9. A researcher may pretend to be a subject in a study because:

Question 10 10. A _____ attempts to predict the relationship between two points.

Page 3

Question 11 11. What is this type of chart?

Question 12 12. Which axis of a histogram usually shows the categories into which the various members of a data set fall?

Question 13 13. What is a chart that shows the popularity or mode of a certain type of data based on the population sampled?

Question 14 14. Using the bar graph 'Top Ten U.S. Rentals in 1999', which movie had the 2nd highest movie rental revenue?

Question 15 15.

Elizabeth wanted to know the gender and the hair color of each of her classmates. She arranged the results of this survey into a two-way table, shown below.

According to the table, what is the joint relative frequency of boys with red hair?

Page 4

Question 16 16. What is a straight line that attempts to predict the relationship between two points, also known as a trend line or line of best fit?

Question 17 17. If an experiment is shown to be statistically significant, then which of the following would be true?

Question 18 18. Dr. Nodd does a study in which she observes parents and their children interacting at home. She finds that the more supportive parents are, the less aggressive their children are. What conclusion can Dr. Nodd make?

Question 19 19. What do we call a straight line that attempts to predict the relationship between two points?

Question 20 20. A student makes a dot plot to represent the grades their classmates got on the last test, and finds that it makes a shape that is mirrored nearly perfectly across a line at the mean. Is this shape symmetrical? Why or why not?

Page 5

Question 21 21. What is the term for the type of data that is measurable?

Question 22 22.

Elizabeth wanted to know the gender and the hair color of each of her classmates. She arranged the results of this survey into a two-way table, shown below.

According to the table, what is the conditional relative frequency of students that are boys, given that those students have brown hair?

Question 23 23. The Bar Graph, 'Top Ten U.S Rentals in 1999', shows the top ten movies in the U.S during the year. Which movie had about 150 million in rentals?

Question 24 24. Histograms are very similar to what other graphical representation of numbers?

Question 25 25. How many children and teens eat bananas?

Page 6

Question 26 26. What is the slope intercept formula?

Question 27 27.

Find the regression line equation using the formulas for the following data set:

(1, 3) (2, 4) (3, 5)

Question 28 28. José wants to calculate a correlation; which of the following graphs should he use?

Question 29 29. The _____ refers to the consistent change in y for each unit change in x.

Question 30 30. What is a graphical representation of the distribution of data?

Praxis Mathematics: Interpreting Statistics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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