(Test Bank) An Introduction To Statistical Concepts

Hahs-Vaughn,Lomax, 4

Math & Statistics

Test Bank

4th Edition

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Test Bank for An Introduction To Statistical Concepts, The downloadable file consists of 314 pages, and the total size of the file is 5.35 MB. Purchase now only for highly discounted price.

Author(s): Hahs-Vaughn, Lomax

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Study Note Preview

ANSWER: B 6. For interval level variables, which of the following properties does not apply? a. Choco Mocha is five units lower than Cocoa Mocha . b. Choco Mocha is tastier than Cocoa Mocha . c. Choco Mocha is twice as expensive as Cocoa Mocha . d. Choco Mocha is different from Cocoa Mocha . ANSWER: C 7. Which of the following properties is appropriate for ordinal, but not for nominal variables? a. Choco Mocha is $2 greater than Cocoa Mocha . b. Choco Mocha is different from Cocoa Mocha . c. Choco Mo cha is tastier than Cocoa Mocha . d. Choco Mocha is twice as expensive as Cocoa Mocha . ANSWER: C 8. Lilo has sent four manuscripts to journals to be considered for review while Stitch has sent out two. Which scale of measurement is implied by the quantity of publications? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: D 9. A researcher creates a varia ble called “shampoo type ” that categorizes shampoo into three types: a) herbal; b) chemically balanced; and c) non -additive. What type of measurement scale is “shampoo category? ” a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: A 10. The number of bagels purchased by students at the student union each day is considered which measurement scale? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: D 11. Jennifer counts the number of stud ents that purchase lunch from the student union on Monday. Which measurement scale is " the number of students that purchase lunch"? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: D 12. Wesley creates a variable that is called “truck size ” that categorizes trucks into three types: a) co mpact; b) mid -sized; c) full -size and d) monster . What type of measurement scale is “truck size? ” a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: B 13. Luke is shopping for engagement rings and decides there are three types of diamonds: 1) tiny; 2) average; and 3) huge. What is the measurement scale for "type of diamond" based on Luke's classification? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: B 14. Marie is cleaning out her toy box and groups her toys into the following categories: a) stuffed animals; b) electronic toys and games; c) books; and d) toys to donate to charity . What is the measurement scale for Marie's toy categories? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: A 15. After Marie cleans out her toy box, she counts the number of toys that she plans to donate to charity. What is the measurement scale for this variable? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: D 16. A question on a survey completed by dancers asked which style of dance was their favorite. Options included the following: a) ballet; b) jazz; c) lyrical; and d) tap. What is the measurement scale of this variable? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: A 17. A pool company conducted a survey and asked respondents to indicate the ideal temperature in which to swim. Respondents were asked to respond in whole numbers using the Fahrenheit scale. What is the measurement scale of this variable? a. Nominal b. Ordinal c. Interval d. Ratio ANSWER: C 18. Which one of the following would be considered a categorical variable? a. Age in months b. Favorite actress c. Number of students who graduate with honors d. Temperature (in Fahrenheit) at noon ANSWER: B 19. Which one of the following would be considered a discrete variable? a. Age in months b. Favorite actress c. Number of st udents who graduate with honors d. Temperature (in Fahrenheit) at noon ANSWER:C 20. Which one of the following would be considered a discrete variable? a. Blood pressure b. Favorite actress c. Number of children in a family d. Home ownership (yes or no) ANSWER:C 21. Which one of the following would be considered an interval variable? a. Age in months b. Favorite actress c. Number of students who graduate with honors d. Temp erature (in Fahrenheit) at noon ANSWER: D 22. Which one of the following would be considered both ratio and continuous variable? a. Age in months b. Favorite actress c. Number of students who graduate with honors d. Temperature (in Fahrenheit) at noon ANSWER: A 23. Mark made an A on his midterm exam and Randall made a B. I assert that Mark’s midterm exam score was 10 points higher than Randall’s. Am I correct? a. Yes b. No ANSWER: B 24. Mark studied for the midterm exam for 6 hours. Randall studied for 2 hours. I assert that Mark studied three times longer for the midterm exam than Randall. Am I correct? a. Yes b. No ANSWER: B 25. Haiyan is an associate professor and Monifa is an assistant professor. I assert that Haiyan has five more years teaching experience than Monifa. Am I correct? a. Yes b. No ANSWER: B 26. JoAnn’s income is $50,000 while Betty’s income is $100,000. I assert that JoAnn’s income is one -half that of Betty’s income. Am I correct? a. Yes b. No ANSWER: A 27. A truck dealer promotes two new trucks, one is called the ‘light duty’ truck and the other is called the ‘heavy duty’ truck. I assert that the ‘light duty’ truck holds one-half the capacity as the ‘heavy duty’ truck. Am I correct? a. Yes b. No ANSWER: B 28. The standing high school re cord for the long jump is 6 feet, and the elementary school record is 4 feet. I assert that the elementary school record is two -thirds the length of the high school record. Am I correct? a. Yes b. No ANSWER: A Short Answer 1. Rank the following values of the number of students per classroom w ho are enrolled in an afterschool activity , assigning rank 1 to the largest value: 3 0 5 12 20 8 2 15 9 11 ANSWER Value Rank 3 8 0 10 5 7 12 3 20 1 8 6 2 9 15 2 9 5 11 4 2. Rank the following values of the number of credit cards owned by college freshmen , assigning rank 1 to the largest value: 4 2 0 5 10 11 15 1 3 9 ANSWER Value Rank 4 6 2 8 0 10 5 5 10 3 11 2 15 1 1 9 3 7 9 4 3. Rank the following values of th e number of hours of television watched per day , assigning rank 1 to the largest value: 4 0 8 13 9 3 2 7 5 1 ANSWER Value Rank 4 6 0 10 8 3 13 1 9 2 3 7 2 8 7 4 5 5 1 9 4. Rank the following values of the number of miles driven from home to work in one day , assigning rank 1 to the largest value: 9 52 20 36 22 44 18 28 16 26 ANSWER Value Rank 9 10 52 1 20 7 36 3 22 6 44 2 18 8 28 4 16 9 26 5 5. Rank the following values of the number of emails received in one day , assigning rank 1 to the largest value: 72 250 60 10 0 8 720 300 125 85 ANSWER Value Rank 72 6 250 3 60 7 10 8 0 10 8 9 720 1 300 2 125 4 85 5 Multiple -Choice Chapter 2 (Data Representation) 1. For a distribution where the 25 th percentile is 30, what is the percentile rank of 30? a. 0 b. .25 c. .30 d. 25 e. 30 ANSWER: E 2. For a distribution where the 75 th percentile is 50, what is the percentile rank of 50? a. 0 b. .50 c. .75 d. 50 e. 75 ANSWER: D 3. For a distribution where the 40 th percentile is 80, what is the percentile rank of 80? a. 0 b. .40 c. .80 d. 40 e. 80 ANSWER: E 4. For a distribution where the 90 th percentile is 20, what is the percentile rank of 20? a. 0 b. .20 c. .90 d. 20 e. 90 ANSWER: D 5. Among the following, what is the preferred method for graphing data pertaining to preference of coffee flavor of a sample? a. Bar graph b. Cumulative frequency polygon c. Frequency polygon d. Histogram ANSWER: A 6. Among the following, what is the preferred method for graphing data pertaining to eye color of a sample? a. Bar graph b. Cumulative frequency polygon c. Frequency polygon d. Histogram ANSWER: A 7. Among the following, what is the preferred method for graphing data pertaining to religious affiliation of a sample? a. Bar gra ph b. Cumulative frequency polygon c. Frequency polygon d. Histogram ANSWER: A 8. Among the following, what is the preferred method for graphing data pertaining to favorite ty pes of dance of a sample? a. Bar graph b. Cumulative frequency polygon c. Frequency polygon d. Histogram ANSWER: A 9. Which of the following statements is correct for a continuous variable? a. The proportion of the distribution below the 25th percentile is 75%. b. The proportion of the distribution be low the second quartile is 50% . c. The proportion of the distribution between the first quartile and 75th percentile is 75%. d. The proportion of the distribution between the second quartile and 50th percentile is 50%. e. The prop ortion of the distribution between the third quartile and 75th percentile is 25%. ANSWER: B 10. Given a variable that is interval or ratio in measurement scale, which of the following is correct? a. The proportion of the distribution between the 25th percentil e and the 3rd quartile is 75%. b. The proportion of the distribution between the 50th percentile and the 2nd quartile is 50. c. The proportion of the distribution below the 1st quartile is 75%. d. The proportion of the distribution between the 2nd quartile and the 75% percentile is 25%. ANSWER: D 11. Which of the following statements is correct for a continuous variable? a. The proportion of the distribution below the 25th percentile is 25%. b. The proportion of the distribution below the second quartile is 25%. c. The proportion of the distribution between the first quartile and 50th percentile is 50%. d. The proportion of the distribution between the second quartile and 50th percentile is 25%. e. The proportion of the distribution between the thi rd quartile is 25%. ANSWER: A