Overview of Scientific Foundations 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!

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Question 1 1. The value that occurs the most frequently in a data set is known as the _____.

Question 2 2.

The following data set represents the minimum wage for 1990-2000. Calculate the median.

8.25, 9.8, 7.25, 7.25, 7.25, 8.75, 8.44, 9.5, 9.6, 9.5

Question 3 3. Which of the following is NOT a source of random error?

Question 4 4. Accuracy refers to

Question 5 5. Which axis is the horizontal axis?

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Question 6 6. Which variable remains unaffected by the other variables of an experiment?

Question 7 7. Mrs. Jones has four children: two boys and two girls. How many different combinations of boys and girls could she have had if she still ended up with four children?

Question 8 8. At Peter's Pizzeria, you can create your pizza choosing from 3 toppings, 3 cheese combinations, and 4 sizes. What are the events in this scenario?

Question 9 9. Which rule allows you to get oriented to the information in the problem?

Question 10 10. During an exam, what should you do if you're having trouble visualizing the line graph that matches your data table?

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Question 11 11. In theoretical probability, a favorable outcome value is:

Question 12 12. In theoretical probability, to increase your chances of winning in an event you must:

Question 13 13. Which scatterplot shows the strongest correlation?

Question 14 14. Which of the scatterplots shows a negative correlation?

Question 15 15. A student wants to investigate which locations in the school have the most bacteria. She predicts the bathroom has the most bacteria and then cultures bacteria from multiple locations in the school. When she has her results, which of the following is the most logical next step?

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Question 16 16. Jimil conducted an experiment to compare how much weight different types of bridges could hold. He wants to write a conclusion comparing his results to his hypothesis. Which of the following would be the best conclusion?

Question 17 17. If I release 10 spiders into a room and measure how long it takes people to get out of the room, what is the independent variable?

Question 18 18. If you placed a large, plastic spider on someone's chair before they sat down and screamed 'SPIDER!', why is your screaming the moderating variable?

Question 19 19. Which is true about scientific method?

Question 20 20. Researchers have two groups of children. One group is watching violent cartoons and the other group is watching nonviolent cartoons. Researchers are counting the number of violent acts in their children's play. The cartoon is the _______.

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Question 21 21. Bob wants to study middle-school students' favorite television shows. He thinks using a stratified random sample would be the best option for his study. Which of the following methods would ensure Bob takes a stratified random sample?

Question 22 22. Which of the following would be the BEST population to find a simple random sample?

Question 23 23. Which of the following sample hypotheses is a poor choice?

Question 24 24. Which of the following best describes a hypothesis?

Use this material to answer questions #25 through #26

You wanted to know if there was a correlation between age and income so you gathered the following data:

Data

Question 25 25. Which scatter plot best shows the data?

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Use this material to answer questions #25 through #26

You wanted to know if there was a correlation between age and income so you gathered the following data:

Data

Question 26 26. What type of correlation does age and income have?

Question 27 27. Which of the following data fits the hypothesis that a flat-bottomed boat is more stable than a v-shaped-bottomed boat? To test this hypothesis you measure how far away from the center upright line you can tip the boat before the boat tips over.

Question 28 28. If your hypothesis is food coloring will not mix with oil, then what would you expect to see with your data?

Question 29 29.

The following data set represents the average annual temperatures for 10 European countries in 2016 (Celsius). Calculate the range.

1.75, 9.8, 7.55, 10.55, 5.8, 9.45, 19.2, 18.45, 16.2, 5.8

Question 30 30. Which of the following is considered experimental error?

Overview of Scientific Foundations 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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