,TESTBANK for Understandable Statistics , 13th
Edition Charles Henry Brase
Notes
1- The file is chapter after chapter.
2- We have shown you few pages sample.
3- The file contains all Appendix and Excel
sheet if it exists.
4- We have all what you need, we make
update at every time. There are many new
editions waiting you.
5- If you think you purchased the wrong file
You can contact us at every time, we can
replace it with true one.
Our email:
,Name: Class: Date:
Chapter 1
1. Data may be classified by one of the four levels of measurement. What is the name of the lowest level?
a. interval
b. nominal
c. ordinal
d. ratio
e. simple
ANSWER: b
2. Identify the variable in the information below.
The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat
of the high kings of Ireland. Because of its
archeological importance, Tara has received extensive study (Reference: Tara:
An Archeological survey by Conor Newman, Royal Irish
Academy, Dublin). Suppose an archeologist wants to estimate the
density of ferromagnetic artifacts in the Tara region. For this purpose, a random sample of 55 plots, each
of size 100 square meters, is used. The number of ferromagnetic artifacts for each plot is determined.
a. number of plots
b. size of the plots
c. none of these choices
d. number of ferromagnetic artifacts per 100 square meters
e. density of ferromagnetic artifacts
ANSWER: d
3. Identify whether the variable in the information below is qualitative or quantitative.
USA Today reported that 44.9% of those surveyed (1261 adults) ate in a fast-food restaurant from one to
three times each week.
a. qualitative
b. quantitative
c. neither qualitative nor quantitative
d. qualitative as well as quantitative
e. Information does not have any variable.
ANSWER: a
4. Identify the implied population in the information below.
The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high
kings of Ireland. Because of its archeological importance, Tara has
received extensive study (Reference: Tara: An Archeological survey by Conor
Newman, Royal Irish Academy, Dublin). Suppose an archeologist wants to
estimate the density of ferromagnetic artifacts in the Tara region. For
this purpose, a random sample of 55 plots, each of
size 100 square meters, is used. The number of ferromagnetic
artifacts for each plot is determined. The variable in this
information is number of ferromagnetic artifacts per 100 square meters.
a. number of ferromagnetic artifacts per 100-square-meters
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,Name: Class: Date:
Chapter 1
b. density of ferromagnetic artifacts in some of the plots
c. none of these choices
d. all plots in the Tara region
e. number of ferromagnetic artifacts per 100-square-meters in some plots in the Tara region
ANSWER: d
5. Identify whether the variable in the information below is qualitative or quantitative.
The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high
kings of Ireland. Because of its archeological importance, Tara has
received extensive study (Reference: Tara: An Archeological survey by Conor
Newman, Royal Irish Academy, Dublin). Suppose an archeologist wants to
estimate the density of ferromagnetic artifacts in the Tara region. For
this purpose, a random sample of 55 plots, each of
size 100 square meters, is used. The number of ferromagnetic
artifacts for each plot is determined. The variable in this
information is number of ferromagnetic artifacts per 100 square meters.
a. quantitative
b. qualitative
c. neither qualitative nor quantitative
d. qualitative as well as quantitative
e. none of these choices
ANSWER: a
6. Identify the level of measurement corresponding to the data "Cost of rod and reel" associated with fishing.
a. interval
b. none of these choices
c. ratio
d. nominal
e. ordinal
ANSWER: c
7. Use a random-number table to get a list of 6 random numbers between 1 and 9 beginning at row 4, block 4.
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 11451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
45678 10100 91251 37041 13712 14672
a. 1 6 9 5 2 8
b. 3 6 9 1 5 7
c. 3 6 9 1 5 2
d. 1 6 9 1 5 2
e. 3 6 9 1 6 2
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,Name: Class: Date:
Chapter 1
ANSWER: c
8. Use a random-number table to simulate the outcomes of tossing a quarter 12 times beginning at row 1, block
4. Assume that the quarter is balanced (i.e., fair) and an even digit is assigned to the outcome heads (H) and an
odd digit to the outcome tails (T).
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 10451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
45678 10100 91251 37041 13712 14672
a. T H H T H H H T H H H H
b. T H H T H H H T H T H T
c. T H H T H H H T H T T H
d. T H H T H H H H H T H H
e. T H H T H H H T H T H H
ANSWER: e
9. Identify the sampling technique used in the following information.
An important part of employee compensation is a benefits package that might include health insurance, life
insurance, child care, vacation days, retirement plan, parental leave, bonuses, etc. Suppose you want to conduct
a survey of benefits packages available in private businesses in Hawaii. You want a sample size of 100.
Sampling technique used to get the sample size of 100 is described below.
Group the businesses according to type: medical, shipping, retail, manufacturing, financial,
construction, restaurant, hotel, tourism, other. Then select a random sample of 10 businesses from
each sample type.
a. Systematic sample
b. Convenience sample
c. Stratified sample
d. Cluster sample
e. Simple random sample
ANSWER: c
10. Find the technique for gathering data in the study below.
The Colorado Division of Wildlife imposed special fishing regulations on the Deckers
section of the South Platte River. All trout under 15 inches had to be released. A study of trout before and
after the regulations went into effect showed that the average length of trout increased by 4.2
inches after the new regulations.
a. observational study
b. experiment
c. census
d. sampling
e. none of these choices
ANSWER: b
Copyright Cengage Learning. Powered by Cognero. Page 3
,Name: Class: Date:
Chapter 1
11. Find the technique for gathering data in the study below.
An analysis of a sample of 31,000 patients from New York hospitals suggests that the poor and the
elderly sue for malpractice at one-fifth the rate of wealthier patients (Journal of the Medical Association).
a. census
b. sampling
c. simulation
d. experiment
e. none of these choices
ANSWER: b
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,Name: Class: Date:
Chapter 2
1. Finish times (to the nearest hour) for 10 dogsled teams are shown below.
Find the class width. Use five classes.
344 292 350 267 304 291 255 257 331 363
a. 124
b. 24
c. 126
d. 22
e. 23
ANSWER: d
2. Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a histogram. Use five classes.
261 274 236 244 278 296 284 299 290 290 248 256
338 360 341 333 261 269 287 296 313 311 306 306
299 303 277 283 304 305 286 290 286 287 297 299
332 330 309 328 306 328 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 302 319
a. b.
c. d.
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,Name: Class: Date:
Chapter 2
e.
ANSWER: c
3. Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a histogram. Use five classes.
261 269 236 244 280 296 284 299 288 288 249 256
338 360 341 333 261 268 287 296 313 311 306 306
299 303 277 283 304 305 287 290 287 288 297 299
332 330 309 328 306 328 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 239 358
a. b.
c. d.
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,Name: Class: Date:
Chapter 2
e.
ANSWER: c
4. Finish times (to the nearest hour) for 57 dogsled teams are shown below. Draw a histogram. Use five classes.
261 271 236 244 279 296 284 299 289 289 247 256
338 360 341 333 261 266 287 296 313 311 307 307
299 303 277 283 304 305 289 290 289 290 297 299
332 330 309 329 307 329 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327
a. b.
c. d.
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, Name: Class: Date:
Chapter 2
e.
ANSWER: c
5. Finish times (to the nearest hour) for 10 dogsled teams are shown below.
Make a frequency table showing class limits, class boundaries, midpoints, frequency, relative frequencies, and
cumulative frequencies. Use three classes. (Round your answer for relative frequency to the nearest hundredth
and for midpoint to the nearest tenth.)
308 262 310 268 299 249 257 286 239 278
a.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 3 0.30 3
272.5 3 0.30 6
296.5 4 0.40 10
b.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 3 0.30 3
273.0 3 0.30 6
298.0 4 0.40 10
c.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 4 0.30 3
273.0 5 0.30 6
296.5 5 0.40 10
d.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 4 0.30 3
272.5 5 0.30 6
Copyright Cengage Learning. Powered by Cognero. Page 4
Edition Charles Henry Brase
Notes
1- The file is chapter after chapter.
2- We have shown you few pages sample.
3- The file contains all Appendix and Excel
sheet if it exists.
4- We have all what you need, we make
update at every time. There are many new
editions waiting you.
5- If you think you purchased the wrong file
You can contact us at every time, we can
replace it with true one.
Our email:
,Name: Class: Date:
Chapter 1
1. Data may be classified by one of the four levels of measurement. What is the name of the lowest level?
a. interval
b. nominal
c. ordinal
d. ratio
e. simple
ANSWER: b
2. Identify the variable in the information below.
The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat
of the high kings of Ireland. Because of its
archeological importance, Tara has received extensive study (Reference: Tara:
An Archeological survey by Conor Newman, Royal Irish
Academy, Dublin). Suppose an archeologist wants to estimate the
density of ferromagnetic artifacts in the Tara region. For this purpose, a random sample of 55 plots, each
of size 100 square meters, is used. The number of ferromagnetic artifacts for each plot is determined.
a. number of plots
b. size of the plots
c. none of these choices
d. number of ferromagnetic artifacts per 100 square meters
e. density of ferromagnetic artifacts
ANSWER: d
3. Identify whether the variable in the information below is qualitative or quantitative.
USA Today reported that 44.9% of those surveyed (1261 adults) ate in a fast-food restaurant from one to
three times each week.
a. qualitative
b. quantitative
c. neither qualitative nor quantitative
d. qualitative as well as quantitative
e. Information does not have any variable.
ANSWER: a
4. Identify the implied population in the information below.
The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high
kings of Ireland. Because of its archeological importance, Tara has
received extensive study (Reference: Tara: An Archeological survey by Conor
Newman, Royal Irish Academy, Dublin). Suppose an archeologist wants to
estimate the density of ferromagnetic artifacts in the Tara region. For
this purpose, a random sample of 55 plots, each of
size 100 square meters, is used. The number of ferromagnetic
artifacts for each plot is determined. The variable in this
information is number of ferromagnetic artifacts per 100 square meters.
a. number of ferromagnetic artifacts per 100-square-meters
Copyright Cengage Learning. Powered by Cognero. Page 1
,Name: Class: Date:
Chapter 1
b. density of ferromagnetic artifacts in some of the plots
c. none of these choices
d. all plots in the Tara region
e. number of ferromagnetic artifacts per 100-square-meters in some plots in the Tara region
ANSWER: d
5. Identify whether the variable in the information below is qualitative or quantitative.
The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high
kings of Ireland. Because of its archeological importance, Tara has
received extensive study (Reference: Tara: An Archeological survey by Conor
Newman, Royal Irish Academy, Dublin). Suppose an archeologist wants to
estimate the density of ferromagnetic artifacts in the Tara region. For
this purpose, a random sample of 55 plots, each of
size 100 square meters, is used. The number of ferromagnetic
artifacts for each plot is determined. The variable in this
information is number of ferromagnetic artifacts per 100 square meters.
a. quantitative
b. qualitative
c. neither qualitative nor quantitative
d. qualitative as well as quantitative
e. none of these choices
ANSWER: a
6. Identify the level of measurement corresponding to the data "Cost of rod and reel" associated with fishing.
a. interval
b. none of these choices
c. ratio
d. nominal
e. ordinal
ANSWER: c
7. Use a random-number table to get a list of 6 random numbers between 1 and 9 beginning at row 4, block 4.
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 11451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
45678 10100 91251 37041 13712 14672
a. 1 6 9 5 2 8
b. 3 6 9 1 5 7
c. 3 6 9 1 5 2
d. 1 6 9 1 5 2
e. 3 6 9 1 6 2
Copyright Cengage Learning. Powered by Cognero. Page 2
,Name: Class: Date:
Chapter 1
ANSWER: c
8. Use a random-number table to simulate the outcomes of tossing a quarter 12 times beginning at row 1, block
4. Assume that the quarter is balanced (i.e., fair) and an even digit is assigned to the outcome heads (H) and an
odd digit to the outcome tails (T).
65321 85623 10204 50218 20321 22315
98532 91972 39800 45670 20510 10451
92012 59826 35456 79289 91483 29754
45652 98653 45863 36963 15326 78952
45678 10100 91251 37041 13712 14672
a. T H H T H H H T H H H H
b. T H H T H H H T H T H T
c. T H H T H H H T H T T H
d. T H H T H H H H H T H H
e. T H H T H H H T H T H H
ANSWER: e
9. Identify the sampling technique used in the following information.
An important part of employee compensation is a benefits package that might include health insurance, life
insurance, child care, vacation days, retirement plan, parental leave, bonuses, etc. Suppose you want to conduct
a survey of benefits packages available in private businesses in Hawaii. You want a sample size of 100.
Sampling technique used to get the sample size of 100 is described below.
Group the businesses according to type: medical, shipping, retail, manufacturing, financial,
construction, restaurant, hotel, tourism, other. Then select a random sample of 10 businesses from
each sample type.
a. Systematic sample
b. Convenience sample
c. Stratified sample
d. Cluster sample
e. Simple random sample
ANSWER: c
10. Find the technique for gathering data in the study below.
The Colorado Division of Wildlife imposed special fishing regulations on the Deckers
section of the South Platte River. All trout under 15 inches had to be released. A study of trout before and
after the regulations went into effect showed that the average length of trout increased by 4.2
inches after the new regulations.
a. observational study
b. experiment
c. census
d. sampling
e. none of these choices
ANSWER: b
Copyright Cengage Learning. Powered by Cognero. Page 3
,Name: Class: Date:
Chapter 1
11. Find the technique for gathering data in the study below.
An analysis of a sample of 31,000 patients from New York hospitals suggests that the poor and the
elderly sue for malpractice at one-fifth the rate of wealthier patients (Journal of the Medical Association).
a. census
b. sampling
c. simulation
d. experiment
e. none of these choices
ANSWER: b
Copyright Cengage Learning. Powered by Cognero. Page 4
,Name: Class: Date:
Chapter 2
1. Finish times (to the nearest hour) for 10 dogsled teams are shown below.
Find the class width. Use five classes.
344 292 350 267 304 291 255 257 331 363
a. 124
b. 24
c. 126
d. 22
e. 23
ANSWER: d
2. Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a histogram. Use five classes.
261 274 236 244 278 296 284 299 290 290 248 256
338 360 341 333 261 269 287 296 313 311 306 306
299 303 277 283 304 305 286 290 286 287 297 299
332 330 309 328 306 328 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 302 319
a. b.
c. d.
Copyright Cengage Learning. Powered by Cognero. Page 1
,Name: Class: Date:
Chapter 2
e.
ANSWER: c
3. Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a histogram. Use five classes.
261 269 236 244 280 296 284 299 288 288 249 256
338 360 341 333 261 268 287 296 313 311 306 306
299 303 277 283 304 305 287 290 287 288 297 299
332 330 309 328 306 328 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327 239 358
a. b.
c. d.
Copyright Cengage Learning. Powered by Cognero. Page 2
,Name: Class: Date:
Chapter 2
e.
ANSWER: c
4. Finish times (to the nearest hour) for 57 dogsled teams are shown below. Draw a histogram. Use five classes.
261 271 236 244 279 296 284 299 289 289 247 256
338 360 341 333 261 266 287 296 313 311 307 307
299 303 277 283 304 305 289 290 289 290 297 299
332 330 309 329 307 329 285 291 295 298 306 315
310 318 318 320 333 321 323 324 327
a. b.
c. d.
Copyright Cengage Learning. Powered by Cognero. Page 3
, Name: Class: Date:
Chapter 2
e.
ANSWER: c
5. Finish times (to the nearest hour) for 10 dogsled teams are shown below.
Make a frequency table showing class limits, class boundaries, midpoints, frequency, relative frequencies, and
cumulative frequencies. Use three classes. (Round your answer for relative frequency to the nearest hundredth
and for midpoint to the nearest tenth.)
308 262 310 268 299 249 257 286 239 278
a.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 3 0.30 3
272.5 3 0.30 6
296.5 4 0.40 10
b.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 3 0.30 3
273.0 3 0.30 6
298.0 4 0.40 10
c.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 4 0.30 3
273.0 5 0.30 6
296.5 5 0.40 10
d.
Cumulative
Class Limits Boundaries Midpoint Freq. Relative Freq.
Freq.
248.0 4 0.30 3
272.5 5 0.30 6
Copyright Cengage Learning. Powered by Cognero. Page 4
