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# Descriptive Statistics: Representation Chapter Exam

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. What menu option is used in Excel for creating graphs and plots of data?

#### Question 2 2. Once a plot has been created, how do you access all of the display options for that plot?

#### Question 3 3. What is the easiest way to shift between basic plot types in Excel?

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

#### Question 5 5. What is a graph of ordered pairs showing a relationship between two sets of data?

### Page 2

#### Question 6 6. What is a condition or piece of data in an experiment that can be controlled or changed?

#### Question 7 7. Using the box plot provided, what is the vertical line circled in red?

#### Question 8 8. Using the box plot provided, what is the vertical line circled in red?

#### Question 9 9. Using the box plot provided, what is the rectangle circled in red?

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Question 10
10.
Susanne has a set of data she is using to create a histogram. If the set of numbers below is her data set, then which number in the data set will create the highest peak?

2, 2, 3, 5, 6, 7, 8, 6, 5, 2, 3, 4, 2, 5, 6, 2

### Page 3

#### Question 11 11. Which axis of a histogram usually shows the categories into which the various members of a data set fall?

#### Question 12 12. Histograms are very similar to what other graphical representation of numbers?

#### Question 13 13. Box plots are also called _____.

#### Question 14 14. The box in a box plot represents what portion of the data?

#### Question 15 15. What field of mathematics often uses data distributions?

### Page 4

#### Question 16 16. What do we call areas in a data set where no observations have been made?

#### Question 17 17. If a data set has two different modes, then what is it?

#### Question 18 18. A graph that peaks to the left or the right of the center is known as _____.

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Question 19
19.
Xavier has always been a prodigy, smarter than everyone in his classes. His science teacher gave his class a test and everyone failed but him. He got a 94 but everyone else got scores in the 50 and 60 range (out of 100). Find the skew of the following data set of Xavier and 7 of his fellow students:

53, 58, 61, 62, 62, 65, 69, 94

#### Question 20 20. In a normal data distribution with a symmetric bell curve, what is the skewness?

### Page 5

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Question 21
21.
Mrs. Honey gave her class a very easy math test to bring their overall grades up. Though, one person did not do as well as the others. Find the skew of the test scores of these 6 students:

70, 92, 94, 96, 98, 98

#### Question 22 22. 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?

#### Question 23 23. What is the shape of a graph that peaks to the left or the right of the center?

#### Question 24 24. What is the term for the type of data that is measurable?

#### Question 25 25. In Excel, ''Column'' or ''Bar'' refers to what type of statistical data display?

### Page 6

#### Question 26 26. How are independent variables and dependent variables different?

#### Question 27 27. Using the box plot provided, what is the vertical line circled in red?

#### Question 28 28. What is a graphical representation of the distribution of data?

#### Question 29 29. Which data distribution would be useful for showing frequencies of a large set of data?

#### Question 30 30. When a data set is visually symmetrical, what occurs all at the same point?

#### Descriptive Statistics: Representation 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!