
The only textbook featuring eyeball-estimation and progressive cumulative review
Errata (sorted by chapter)
We have worked very hard to make Comprehending Behavioral Statistics (6th Edition) and Personal Trainer error free, but occasionally errors do occur. I apologize for the inconvenience, and thank those who have spotted errors. All known errors are listed below.
If you find an error in Comprehending Behavioral Statistics (6th Edition) or in Personal Trainer that is not already listed here, please let us know about it immediately so that we can inform others.
We will correct Personal Trainer errors immediately, and will correct textbook errors in all subsequent printings.
Errata sorted by chapter. Last updated 12-1-23.
Chapter | Page | Line | Now Reads | Should Read | Date | Thanks To |
n/a | Inside front cover | 5 | ![]() |
![]() |
5‑19‑21 | Kaylee Scholtes, University of Nevada, Las Vegas |
3 | 578 | Ch. 3 Sec. C. #23 | [not provided] | ![]() |
9‑15‑17 | Monserrat Leal-Arcos, University of Nevada, Las Vegas |
4 | 578 | Ch. 4 Sec. A. #5(f) | [not provided] | between about 15 and 16 | 6‑15‑20 | James Webster, University of Nevada, Las Vegas |
4 | 578 | Ch. 4 Sec. A. #6(f) | [not provided] | between about 82 and 84 | 2‑6‑22 | James Webster, University of Nevada, Las Vegas |
4 | 579 | Ch. 4 Sec. C. #23 | [not provided] | ![]() |
6‑15‑20 | Jessica Bright, University of Nevada, Las Vegas |
5 | 98 | Figure 5.9 label | 19-1.1 | 1.9-1.1 | 9-24-17 | Matt Helm, University of Nevada, Las Vegas |
6 | 115 | 6 | the |
the percentage (associated | 9-30-19 | Maya Chavis, University of Nevada, Las Vegas |
8 | 177 | 2nd info note | Is we know μ, | If we know μ, | 6-23-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
8 | 178 | 8 | 2 + 14 + 34 + 34 + 14 + 2 = 96% | 14 + 34 + 34 + 14 = 96% | 6-23-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
8 | 182 | 12 | lies between 99.56 and 101.13 pounds | lies between 97.99 and 101.13 pounds | 10-8-19 | Shaun Plummer and Elaine Aquino, University of Nevada, Las Vegas |
9 | 208 | 25 (5th paragraph 3rd line) | null hypothesis says "there no effect"; | null hypothesis says "there is no effect"; | 3-7-23 | YeonJi Song, University of Nevada, Las Vegas |
9 | 583 right column | Chapter 9, Section C, Exercise 20 | 20. (b) >99.999% (c) <.001% | 20. (b) 99.997% (c) .003% | 3-7-23 | YeonJi Song, University of Nevada, Las Vegas |
9 | 212 | Table 9.3 caption, 2nd line | decision mode | decision made | 7-14-17 | Russ Hurlburt, University of Nevada, Las Vegas |
10 | 229 | last marginal SILI note | MEW is less than or equal to 100 | MEW is equal to 100 | 6-25-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
10 | 249 | 8th line from bottom | ![]() |
![]() |
6-26-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
10 | 249 | last line | (because is √n the denominator) | (because √n is the denominator) | 6-25-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
10 | 259 | Exercise 7 first line | σ ≥ 2 | σ = 2 | 12-1-23 | Kim Barchard, University of Nevada, Las Vegas |
10 | 259 | Exercise 7 second line | H0: μ = 7 | H0: μ ≥ 7 | 12-1-23 | Kim Barchard, University of Nevada, Las Vegas |
10 | 584 right column | Figure for exercise 3. (d) and (e) last line | tobs = 1.71 | tobs = 1.17 | 3-12-23 | YeonJi Song, University of Nevada, Las Vegas |
10 | 585 left column | Answer to Exercise 5 part (n) | d = .51 | d = –.51 | 10-20-19 | Michelle Gleason, University of Nevada, Las Vegas |
10 | 585 right column | Figure for Exercise 5 part (n) | d = .51 | d = –.51 | 10-20-19 | Michelle Gleason, University of Nevada, Las Vegas |
11 | 272 | last paragraph 1st line | the same thing (namely, σ2) | the same thing (namely, σ2) | 6-29-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
11 | 279 | Table 11.3, right-hand HBU column, 4th row | 1514.03 108.14 √108.14 |
1514.93 108.21 √108.21 |
10-31-17 | Aaron Hiller, University of Nevada, Las Vegas |
11 | 283 | 2 | best point-estimate) of α | best point-estimate) of σ | 7-2-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
11 | 586 | Figure for exercise 11.2 (d) and (e) |
The part in green has been moved to the negative side; the parts in yellow have been extended |
![]() |
10-27-20 | Melanie Lopez Pedroso, University of Nevada, Las Vegas |
11 | 586 | Exercise 3(b) | s1 = 4.111. s2 = 3.568 | s12 = 16.90, s22 = 12.731 | 4-12-21 | Cassandra Foster and Bailey Way, University of Nevada, Las Vegas |
11 | 586 | Exercise 3(b) | ![]() |
![]() |
4-12-21 | Russ Hurlburt, University of Nevada, Las Vegas |
11 | 587 | Exercise 5(a) | spooled = 5.101 | s2pooled = 26.02 | 10-31-23 | Wyatt Swartzbaugh, University of Nevada, Las Vegas |
11 | 588 | Exercise 5(b) | spooled = 10.198 | s2pooled = 104.08 | 10-31-23 | Wyatt Swartzbaugh, University of Nevada, Las Vegas |
11 | 588 | Exercise 6(b) | spooled = 5.101 | s2pooled = 26.02 | 10-31-23 | Wyatt Swartzbaugh, University of Nevada, Las Vegas |
12 | 309 | 6 | ![]() |
![]() |
7-3-17 | Xing Huang, University of Nevada, Las Vegas |
12 | Personal Trainer Lab 12 pp. 35, 36, 37, 38 |
Table first row | –21.16 | 21.16 | 11-1-19 | Herman Nelson Jr., University of Nevada, Las Vegas |
14 | 365 | 2nd info note 3rd line | "sum of sequared" | "sum of squared" | 7-2-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
14 | 367 | Labels in right-hand panel | ![]() |
![]() |
7-2-20 | James Webster, University of Nevada, Las Vegas |
14 | 368 | 13 | we can recognize that SSW and SST | we can recognize that SSW and SSB | 11-12-19 | Shaun Plummer, University of Nevada, Las Vegas |
14 | 389 | EXERCISE 1 WORKED OUT (a) lines 6 and 7 (occurs in both lines) |
433.60 | 435.60 | 11‑20‑18 | Richard Bovino, University of Nevada, Las Vegas |
14 | 443 | 8th from bottom | Thus, the Marcus' ratings | Thus, Marcus' ratings | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 446 | 17 | If the objerved value | If the observed value | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 596 | Exercise 10 | ![]() |
![]() |
4‑12‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 596 | Exercises 24 and 27 part (h) | (14.6) | (14.2) | 4‑15‑23 | YeonJi Song, University of Nevada, Las Vegas |
16 | 434 | Figure 16.4 | Vertical axis now reads 'Weigh (lb)' | Vertical axis should read 'Weight (lb)' | 11-23-21 | Kim Barchard, University of Nevada, Las Vegas |
16 | 444 | Figure 16.21 caption | Scatter diagram of teacher's rating versus student's IQ | Scatter diagram of student's IQ versus teacher's rating | 4-27-21 | Russ Hurlburt, University of Nevada, Las Vegas |
16 | 444 | Figure 16.21 (redraw figure with axes swapped) | ![]() |
![]() |
4-27-21 | Russ Hurlburt, University of Nevada, Las Vegas |
16 | 456 | part (e) | Thenumberofdegreesoffreedomforthisteststatistic | The number of degrees of freedom for this test statistic | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
16 | 599 | Exercise 21 (e) | 20 pairs | n/a; 20 pairs | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
17 | 460 | Learning objective 11 | How is the total sum of squares partitioned in regression | ---Delete this learning objective--- | 12-6-22 | Russ Hurlburt, University of Nevada, Las Vegas |
17 | 481 | 17 (last sentence in paragraph) | closer to the mean that at the outset | closer to the mean than at the outset | 4‑30‑23 | YeonJi Song, University of Nevada, Las Vegas |
17 | 495 | Section C, part (a) (3) | means of one | mean of one | 5-7-19 | Russ Hurlburt, University of Nevada, Las Vegas |
17 App. D |
600 | first line of first column | start at $31.000 | start at $31,000 | 5-4-22 | Fahmo Abdullahi, University of Nevada, Las Vegas |
17 App. D |
600 | Figure 4.(c) the normal distribution is shown too high | ![]() |
![]() |
5-4-22 | Fahmo Abdullahi, University of Nevada, Las Vegas |
17 App. D |
601 | Exercise 23 part (h) | (14.6) | (14.2) | 5-3-21 | Suteeda Boonsrisart, University of Nevada, Las Vegas |
18 | 533 | First column last line | advertising has increase business | advertising has increased business | 5‑5‑23 | YeonJi Song, University of Nevada, Las Vegas |
18 | 604 | Exercise 22. (e) | 13 pairs | N/A; 13 pairs | 5‑5‑23 | YeonJi Song, University of Nevada, Las Vegas |
App. A | 544 | Figure second-level subscript (change df = 3 to df = 3,20) | ![]() |
![]() |
4-22-21 | Russ Hurlburt, University of Nevada, Las Vegas |
App. A | 547 | Table A.5, title | α = .05 | α = .01 | 4-17-18 | Russ Hurlburt, University of Nevada, Las Vegas |
App. A | 549 | Table A.6, title | α = .05 | α = .01 | 4-17-18 | Russ Hurlburt, University of Nevada, Las Vegas |
App. B | 555 | 5 | 4 = –(4) | –4 = –(4) | 5-2-20 | Josh Soliz, University of Nevada, Las Vegas |
App. C | 566 | Equation (8.5) | p – tcv(sp) ≤ Π ≤ p + tcv(sp) | p – tcv(sp) ≤ Π ≤ p + tcv(sp) [df = n – 1] | 5‑5‑23 | YeonJi Song, University of Nevada, Las Vegas |

The only textbook featuring eyeball-estimation and progressive cumulative review
Errata in instructors' materials (sorted by chapter)
We have worked very hard to make Comprehending Behavioral Statistics (6th Edition) and Personal Trainer error free, but occasionally errors do occur. I apologize for the inconvenience, and thank those who have spotted errors. All known errors are listed below.
If you find an error in Comprehending Behavioral Statistics (6th Edition) or in Personal Trainer that is not already listed here, please let us know about it immediately so that we can inform others.
We will correct Personal Trainer errors immediately, and will correct textbook errors in all subsequent printings.
Errata in instructor's materials sorted by chapter. Last updated 7-1-17.
Chapter | Page | Line | Now Reads | Should Read | Date | Thanks To |
1 | 1 | None so far! |

The only textbook featuring eyeball-estimation and progressive cumulative review
Errata (sorted by date posted)
We have worked very hard to make Comprehending Behavioral Statistics (6th Edition) and Personal Trainer error free, but occasionally errors do occur. I apologize for the inconvenience, and thank those who have spotted errors. All known errors are listed below.
If you find an error in Comprehending Behavioral Statistics (6th Edition) or in Personal Trainer that is not already listed here, please let us know about it immediately so that we can inform others.
We will correct Personal Trainer errors immediately, and will correct textbook errors in all subsequent printings.
Errata sorted by date posted. Last updated 12-1-23.
Chapter | Page | Line | Now Reads | Should Read | Date | Thanks To |
10 | 259 | Exercise 7 first line | σ ≥ 2 | σ = 2 | 12-1-23 | Kim Barchard, University of Nevada, Las Vegas |
10 | 259 | Exercise 7 second line | H0: μ = 7 | H0: μ ≥ 7 | 12-1-23 | Kim Barchard, University of Nevada, Las Vegas |
11 | 587 | Exercise 5(a) | spooled = 5.101 | s2pooled = 26.02 | 10-31-23 | Wyatt Swartzbaugh, University of Nevada, Las Vegas |
11 | 588 | Exercise 5(b) | spooled = 10.198 | s2pooled = 104.08 | 10-31-23 | Wyatt Swartzbaugh, University of Nevada, Las Vegas |
11 | 588 | Exercise 6(b) | spooled = 5.101 | s2pooled = 26.02 | 10-31-23 | Wyatt Swartzbaugh, University of Nevada, Las Vegas |
18 | 533 | First column last line | advertising has increase business | advertising has increased business | 5‑5‑23 | YeonJi Song, University of Nevada, Las Vegas |
18 | 604 | Exercise 22. (e) | 13 pairs | N/A; 13 pairs | 5‑5‑23 | YeonJi Song, University of Nevada, Las Vegas |
App. C | 566 | Equation (8.5) | p – tcv(sp) ≤ Π ≤ p + tcv(sp) | p – tcv(sp) ≤ Π ≤ p + tcv(sp) [df = n – 1] | 5‑5‑23 | YeonJi Song, University of Nevada, Las Vegas |
17 | 481 | 17 (last sentence in paragraph) | closer to the mean that at the outset | closer to the mean than at the outset | 4‑30‑23 | YeonJi Song, University of Nevada, Las Vegas |
16 | 456 | part (e) | Thenumberofdegreesoffreedomforthisteststatistic | The number of degrees of freedom for this test statistic | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
16 | 599 | Exercise 21 (e) | 20 pairs | n/a; 20 pairs | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 443 | 8th from bottom | Thus, the Marcus' ratings | Thus, Marcus' ratings | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 446 | 17 | If the objerved value | If the observed value | 4‑26‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 596 | Exercises 24 and 27 part (h) | (14.6) | (14.2) | 4‑15‑23 | YeonJi Song, University of Nevada, Las Vegas |
14 | 596 | Exercise 10 | ![]() |
![]() |
4‑12‑23 | YeonJi Song, University of Nevada, Las Vegas |
10 | 584 right column | Figure for exercise 3. (d) and (e) last line | tobs = 1.71 | tobs = 1.17 | 3-12-23 | YeonJi Song, University of Nevada, Las Vegas |
9 | 208 | 25 (5th paragraph 3rd line) | null hypothesis says "there no effect"; | null hypothesis says "there is no effect"; | 3-7-23 | YeonJi Song, University of Nevada, Las Vegas |
9 | 583 right column | Chapter 9, Section C, Exercise 20 | 20. (b) >99.999% (c) <.001% | 20. (b) 99.997% (c) .003% | 3-7-23 | YeonJi Song, University of Nevada, Las Vegas |
17 | 460 | Learning objective 11 | How is the total sum of squares partitioned in regression | ---Delete this learning objective--- | 12-6-22 | Russ Hurlburt, University of Nevada, Las Vegas |
App. A | 600 | first line of first column | start at $31.000 | start at $31,000 | 5-4-22 | Fahmo Abdullahi, University of Nevada, Las Vegas |
App. A | 600 | Figure 4.(c) the normal distribution is shown too high | ![]() |
![]() |
5-4-22 | Fahmo Abdullahi, University of Nevada, Las Vegas |
4 | 579 | Ch. 4 Sec. C. #23 | [not provided] | ![]() |
6‑15‑20 | Jessica Bright, University of Nevada, Las Vegas |
16 | 434 | Figure 16.4 | Vertical axis now reads 'Weigh (lb)' | Vertical axis should read 'Weight (lb)' | 11-23-21 | Kim Barchard, University of Nevada, Las Vegas |
n/a | Inside front cover | 5 | ![]() |
![]() |
5‑19‑21 | Kaylee Scholtes, University of Nevada, Las Vegas |
17 | 601 | Exercise 23 part (h) | (14.6) | (14.2) | 5-3-21 | Suteeda Boonsrisart, University of Nevada, Las Vegas |
16 | 444 | Figure 16.21 caption | Scatter diagram of teacher's rating versus student's IQ | Scatter diagram of student's IQ versus teacher's rating | 4-27-21 | Russ Hurlburt, University of Nevada, Las Vegas |
16 | 444 | Figure 16.21 (redraw figure with axes swapped) | ![]() |
![]() |
4-27-21 | Russ Hurlburt, University of Nevada, Las Vegas |
App. A | 544 | Figure second-level subscript (change df = 3 to df = 3,20) | ![]() |
![]() |
4-22-21 | Russ Hurlburt, University of Nevada, Las Vegas |
11 | 586 | Exercise 3(b) | s1 = 4.111. s2 = 3.568 | s12 = 16.90, s22 = 12.731 | 4-12-21 | Cassandra Foster and Bailey Way, University of Nevada, Las Vegas |
11 | 586 | Exercise 3(b) | ![]() |
![]() |
4-12-21 | Russ Hurlburt, University of Nevada, Las Vegas |
11 | 586 | Figure for exercise 11.2 (d) and (e) |
The part in green has been moved to the negative side; the parts in yellow have been extended |
![]() |
10-27-20 | Melanie Lopez Pedroso, University of Nevada, Las Vegas |
11 | 283 | 2 | best point-estimate) of α | best point-estimate) of σ | 7-2-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
14 | 365 | 2nd info note 3rd line | "sum of sequared" | "sum of squared" | 7-2-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
14 | 367 | Labels in right-hand panel | ![]() |
![]() |
7-2-20 | James Webster, University of Nevada, Las Vegas |
11 | 272 | last paragraph 1st line | the same thing (namely, σ2) | the same thing (namely, σ2) | 6-29-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
10 | 249 | 8th line from bottom | ![]() |
![]() |
6-26-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
10 | 249 | last line | (because is √n the denominator) | (because √n is the denominator) | 6-25-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
10 | 229 | last marginal SILI note | MEW is less than or equal to 100 | MEW is equal to 100 | 6-25-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
8 | 177 | 2nd info note | Is we know μ, | If we know μ, | 6-23-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
8 | 178 | 8 | 2 + 14 + 34 + 34 + 14 + 2 = 96% | 14 + 34 + 34 + 14 = 96% | 6-23-20 | Mae Ling Catayong, University of Nevada, Las Vegas |
4 | 578 | Ch. 4 Sec. A. #5(f) | [not provided] | between about 15 and 16 | 6‑15‑20 | James Webster, University of Nevada, Las Vegas |
4 | 578 | Ch. 4 Sec. A. #6(f) | [not provided] | between about 82 and 84 | 6‑15‑20 | James Webster, University of Nevada, Las Vegas |
App. B | 555 | 5 | 4 = –(4) | –4 = –(4) | 5-2-20 | Josh Soliz, University of Nevada, Las Vegas |
14 | 368 | 13 | we can recognize that SSW and SST | we can recognize that SSW and SSB | 11-12-19 | Shaun Plummer, University of Nevada, Las Vegas |
12 | Personal Trainer Lab 12 pp. 35, 36, 37, 38 |
Table first row | –21.16 | 21.16 | 11-1-19 | Herman Nelson Jr., University of Nevada, Las Vegas |
10 | 585 left column | Answer to Exercise 5 part (n) | d = .51 | d = –.51 | 10-20-19 | Michelle Gleason, University of Nevada, Las Vegas |
10 | 585 right column | Figure for Exercise 5 part (n) | d = .51 | d = –.51 | 10-20-19 | Michelle Gleason, University of Nevada, Las Vegas |
8 | 182 | 12 | lies between 99.56 and 101.13 pounds | lies between 97.99 and 101.13 pounds | 10-8-19 | Shaun Plummer and Elaine Aquino, University of Nevada, Las Vegas |
6 | 115 | 6 | the |
the percentage (associated | 9-30-19 | Maya Chavis, University of Nevada, Las Vegas |
17 | 495 | Section C, part (a) (3) | means of one | mean of one | 5-7-19 | Russ Hurlburt, University of Nevada, Las Vegas |
14 | 389 | EXERCISE 1 WORKED OUT (a) lines 6 and 7 (occurs in both lines) |
433.60 | 435.60 | 11‑20‑18 | Richard Bovino, University of Nevada, Las Vegas |
App. A | 547 | Table A.5, title | α = .05 | α = .01 | 4-17-18 | Russ Hurlburt, University of Nevada, Las Vegas |
App. A | 549 | Table A.6, title | α = .05 | α = .01 | 4-17-18 | Russ Hurlburt, University of Nevada, Las Vegas |
11 | 279 | Table 11.3, right-hand HBU column, 4th row | 1514.03 108.14 √108.14 |
1514.93 108.21 √108.21 |
10-31-17 | Aaron Hiller, University of Nevada, Las Vegas |
5 | 98 | Figure 5.9 label | 19-1.1 | 1.9-1.1 | 9-24-17 | Matt Helm, University of Nevada, Las Vegas |
3 | 578 | Ch. 3 Sec. C. #23 | [not provided] | ![]() |
9-15-17 | Monserrat Leal-Arcos, University of Nevada, Las Vegas |
9 | 212 | Table 9.3 caption, 2nd line | decision mode | decision made | 7-14-17 | Russ Hurlburt, University of Nevada, Las Vegas |
12 | 309 | 6 | ![]() |
![]() |
7-3-17 | Xing Huang, University of Nevada, Las Vegas |

The only textbook featuring eyeball-estimation and progressive cumulative review
Errata in instructors' materials (sorted by date posted)
We have worked very hard to make Comprehending Behavioral Statistics (6th Edition) and Personal Trainer error free, but occasionally errors do occur. I apologize for the inconvenience, and thank those who have spotted errors. All known errors are listed below.
If you find an error in Comprehending Behavioral Statistics (6th Edition) or in Personal Trainer that is not already listed here, please let us know about it immediately so that we can inform others.
We will correct Personal Trainer errors immediately, and will correct textbook errors in all subsequent printings.
Errata in instructor's materials sorted by date posted. Last updated 7-1-17.
Chapter | Page | Line | Now Reads | Should Read | Date | Thanks To |
1 | 1 | None so far! |
Submit error for listing in errata or correction in Personal Trainer: