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NMTA Math: Summarizing Data 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.

Select the word or phrase that best fills in the blank:

If the index is not a _____, round the number up, then count the values in the data set from least to greatest until you reach the index.

Question 2 2.

What is the range of the data set below?

3, 7, 9, 11, 11, 11, 15, 17, 18, 24

Question 3 3.

Find the population variance of the following data set:

11, 12, 55, 4, 17, 13, 19

Question 4 4.

Phyllis is also in Jonathan's psychology class. She knows she scored in the 90th percentile on his psychology test. The professor gives the students the following list of grades (without names):

51, 37, 87, 95, 99, 78, 63, 96, 68, 84, 92

Assuming that there are 11 students in the class, what was Phyllis's test score?

Question 5 5. What is the difference between the upper quartile value and the lower quartile value?

Page 2

Question 6 6. A part of a population used to describe the whole group is known as:

Question 7 7.

Find the sample variance of the following data set:

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

Question 8 8. Which of the following is not a valid dispersion amount?

Question 9 9. What is the difference between the upper quartile value and the lower quartile value?

Question 10 10.

Find the standard deviation for the following data set:

101, 106, 125, 142, 78, and 109

Page 3

Question 11 11. What are three methods you can use to find the spread in data?

Question 12 12. What is a group of values and/or means that divide a data set into quarters, or groups of four?

Question 13 13. What is the measure of how far the numbers in a data set are away from the mean or the median?

Question 14 14. When a data set is visually symmetrical, what occurs all at the same point?

Question 15 15. If there are two modes, you should _____.

Page 4

Question 16 16. The mean of an original data set is 5. After linear transformation, the mean of the data set is now 20. Which of the following equations is a possible representation of the linear transformation?

Question 17 17. What is the largest mathematical value in a data set?

Question 18 18. All of the following statements are correct, EXCEPT:

Question 19 19.

Find the second quartile, or the median, for the following data set:

7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 9

Question 20 20.

Find the variance for the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

Page 5

Question 21 21. What is the sum of the numbers in a data set divided by the total number of values in the data set?

Question 22 22. The equation for linear transformation is:

Question 23 23.

Find the interquartile range for the following data set:

7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 9

Question 24 24. A graph that trails off more to the right is said to be what?

Question 25 25. Left tailed is the same as what?

Page 6

Question 26 26.

Find the first quartile for the following data set:

7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 9

Question 27 27. If a data set has two different modes, then what is it?

Question 28 28. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the mean number of medals won during these Olympic Games. (Round it to the nearest whole number.)

Question 29 29. How far a set of numbers are spread out is known as:

Question 30 30.

Find the variance for the following data set:

101, 106, 125, 142, 78, and 109

NMTA Math: Summarizing Data 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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