| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | |
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1 | Date | Paragraph or letter | Problem | Solution | Institution | Last Name | First Name | |||||||||||||
2 | Spring 2023 | |||||||||||||||||||
3 | 3/9/23 | Exercise 1.2.7 | The solution is wrong | The solution should be E not B | ||||||||||||||||
4 | 3/9/23 | page 19 in the model below Figure P.17 | premature is spelled prematrue | fix it | Todd | |||||||||||||||
5 | Winter 2022 | |||||||||||||||||||
6 | 3/24/22 | Expl P.B Solutions | data values in Q7 and Q11 | Answers change if use 639,900 as first data value | Ane | |||||||||||||||
7 | 3/24/22 | Expl P.B Solutions | question 17 | Answer is missing the word "not" | Ane | |||||||||||||||
8 | 4/13 | Example 1.5 | Table 1.54 discussion | Discussion below Think about it should reference 1.99% and 5.55% and 3.47% and 7.09% | Ane | |||||||||||||||
9 | 11/1/22 | Exercise 3.1.1 | Answer options are incorrect | Answer options should be: 3, 6, 7, 8 | Cal Poly | |||||||||||||||
10 | 10/18/22 | Figure 3.4.5 | SSTotal is off | 505,904 | Beth | |||||||||||||||
11 | 10/18/22 | Exploration 3.4 | Solution to 17 references the wrong value | If you add up the 3 adjusted sums of squares, the total is larger than SSModel by 0.15. | Beth | |||||||||||||||
12 | 5/21/22 | Exploration 5.1 | Variable Importance discussion, references 50 degrees F | should be 50 degress Celcius | Karen | |||||||||||||||
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15 | Fall 2020 | |||||||||||||||||||
16 | 8/1/2020 | Exercise P.B.9 | Karchi crickets | Should be Karschi crickets | ||||||||||||||||
17 | 3/24/2021 | Expl 1.1 | There are no directions on how do collect the letter chunking data in class. | Say the directions are in the instructors guide and then put them there. | added | Todd | ||||||||||||||
18 | 3/24/2021 | #10 in Expl 1.2 | It says cap effect and "no cap" effect | It really shoud be black-cap effect and clear-cap effect | Todd | |||||||||||||||
19 | 3/24/2021 | Expl 1.2 | It also says "no cap" at the end of the intro paragraph | I would say clear cap. | ||||||||||||||||
20 | 9/4/20 | Exploration 1.3 | question 26 | Pay attention to the order of subtraction | ||||||||||||||||
21 | 3/24/2021 | Expl 1.3 | Questions 12 and 13 are essentially the same. In the answer key, 12 is answered but not 13 and so the numbering is off from there on. | Delete question 13. | ||||||||||||||||
22 | 3/24/2021 | Expl 1.3 | #20 refers to #19 when it should refer to #18 (though that might change if question 13 is deleted | |||||||||||||||||
23 | 3/24/2021 | Expl 1.3 | #17 they need to use the SE of the residuals and they don't know what it is. | I don't think they have been told yet that the SE of the residuals is the pooled SD given in the applet. They need to know this. | ||||||||||||||||
24 | 3/24/2021 | Example 1.4 | The link for the FishOmega3 data (example 1.4) goes to a more complete data set than what is used in the example. | It seems like the data should just have two variables so it can be used in the applet nicely | open in Excel and only paste in the two columns of interest | Todd | ||||||||||||||
25 | 3/24/2021 | Link in online textbook to squirrel data in expl 1.4 | The link doesn't work. | The url should be: http://www.isi-stats.com/isi2/data/Squirrels.txt The one given in the book has a lowercase s on squirrels | both links work now | Todd | ||||||||||||||
26 | 9/25/2021 | Example 1.6 | Just above Table 1.6.1, "hows" | How might you create... | Andrew | |||||||||||||||
27 | 3/4/2021 | Exercise 1.6.11 | doesn't clearly convey one-sided or two-sided | Suppose you are testing to see whether, on average, heart rates measured in beats per minute (bpm), after sitting for 30 seconds are lower compared to after jumping for 30 seconds. | ||||||||||||||||
28 | 9/25/2021 | Exercise 1.6.12c solution | the problem refers to exercise 6.1.11 | (should be 1.6.11). | Andrew | |||||||||||||||
29 | 3/4/2021 | Exercise 1.6.12c solution | doesn't give rejection region | approximately 4.59 (.55) | Keep in mind these are approximations | |||||||||||||||
30 | 4/13/2021 | Exploration 1.6 solution | #2 A reason for being not an experiment, it says participants are not randomly assinged to groups of how much time they need to parent. Time is the response variable not the explatory. | It should say parent's can't be assigned a sex by the researcher | Todd | |||||||||||||||
31 | 4/13/2021 | Exploration 1.6 solution | #3 The alternative hypothesis is given as two-sided | It should be one-sided with females spending more time than males | Todd | |||||||||||||||
32 | 4/13/2021 | Exploration 1.6 solution | #23 It says the power changed because the F-statistic is standardized | It should say the power changed because using the F-statistic you are conducting a 2-sided test instead of a 1-sided test. | ||||||||||||||||
33 | 4/13/2021 | Exploration 1.6 solution | #28 The current answer doesn't really answer the question. It asks how will it effect power and why | It seems it has to say something about being a paired study and this could remove variability from a couple-effect and thus increase the power of the test. | ||||||||||||||||
34 | ||||||||||||||||||||
35 | 4/15/2021 | Example 2.1 | pg 236 The multiplier (5) out front of the SSinteraction is wrong | It should be 20 instead of 5. The answer is correct | ||||||||||||||||
36 | 9-Jul | Exploration 2.1 | Question 13 | Remind to use results from #7 and #12 | ||||||||||||||||
37 | 7/9/2020 | Exploration 2.1 | Data files | Can use MeltingTimes for Q7 and MeltingTimesUnstacked for Q10. | ||||||||||||||||
38 | 7/9/2020 | Exploration 2.2 | #16 | sub-question should reference Question #10 not Question #9 | ||||||||||||||||
39 | 8/25/2020 | Exploration 2.3 | question 3 | Hint should end with period not comma | ||||||||||||||||
40 | 4/13/2021 | Exploration 2.3 | right after question 5 it says that a high horsepower car is more that 2800 horse power. This would be a rocket, not a car. | I think the cut off is suppose to be 100 not 2800. (2800 was the weight) | Todd | |||||||||||||||
41 | 9/4/2020 | Exercise 2.1.10 | data table | displayed averages for person 6 and 7 incorrect | ||||||||||||||||
42 | 9/4/2020 | Exercise 2.1.11 solution | (f) | value given is percentage explained, not unexplained | ||||||||||||||||
43 | 10/14/2021 | Exercise 2.1.13 | SSperson is not straight forward to find with provided instructions | Give students the value for SSperson (can then ask them to find SSerror) | ||||||||||||||||
44 | 9/4/2020 | Exercise 2.1.16 | solution | wrapped and not wrapped catgories are swapped in the equation | ||||||||||||||||
45 | 7/9/2020 | Exercise 2.CE.3 | (d) | Change question to Produce a confidence interval for the difference in the mean score (Pygmalion vs. control), after adjusting for company | ||||||||||||||||
46 | 7/9/2020 | Exercise 2.CE.4 | Data file | In Exercises data file, the dataset is named WorkCrew rather than WorkCrew1 | ||||||||||||||||
47 | 4/7/2021 | Exploration 2.2 | link is wrong for the one blocking applet between questions 8 and 9 in the ebook (it goes to the one mean applet not the blocking applet) | The link should be http://www.rossmanchance.com/applets/rcbd.html | Todd | |||||||||||||||
48 | 3/24/2021 | Exp 3.3 | Results will vary by stat package, types of sums of squares | At least also show the "anova" output from R | Carla | |||||||||||||||
49 | 9/4/2020 | Exercise 3.CE.6 solution | ANOVA table for d | values in error row should be 12209.67 and 872.12 | ||||||||||||||||
50 | 7/9/2020 | Example 4.1 | Figure 4.1.5 | Equation should be predicted amount of PC extracted = | ||||||||||||||||
51 | 4/20/2021 | Example 4.1 Fig 4.1.10 | The R^2 values are wrong | R^2 values should be 0.0583 and 0.0825 They are both off by a factor of 10. | Todd | |||||||||||||||
52 | 4/25/2021 | Example 4.3 (4.3.2 Video) | In the slide that has the Residual vs. Prediced Price, the overestimate and underestimate are backwards | Nathan should say (and it should read) The model tends to underestimate prices for smaller/cheaper ... The model tends to overestimimate prices for larger/more expensive ... | Todd | |||||||||||||||
53 | 8/12/2020 | Chapter 4 | Figure 4.3.12 | In the pie chart, (0.255%) should be (25.5%) | ||||||||||||||||
54 | 4-May | Example 5.2 page 406 | There are three instances where R^2 has a subscript of 12 | It seems like these subscripts should be brain,height | ||||||||||||||||
55 | 4-May | Exploration 5.2 | Between #11 and #12 the R^2 has a subscript of 12 | It seems like the subscript should be age,sqft like in the equation above it. | Todd | |||||||||||||||
56 | 16-Jul | Exploration 5.3 | #8 | Delete the word "predicted" before speed | ||||||||||||||||
57 | 3-Aug | Exploration 5.4 | #10 | should reference #9, not #8 | ||||||||||||||||
58 | 22-Aug | Exercise 5.1.7 | A, B, C | Replace "percentage points" with "%" | ||||||||||||||||
59 | 4/20/2021 | Exercise 5.2.13 b answer | The less is wrong | Replace the "less" in the answer to "more" | ||||||||||||||||
60 | 8/22/2020 | Exercise 5.3.10 | missing word applet in a and b | into the Multiple Variables applet | ||||||||||||||||
61 | 8/22/2020 | Exercise 5.3.14 | missing word applet in stem | into the Multiple Variables applet | ||||||||||||||||
62 | 8/22/2020 | Exercise 5.3.14 | units on population | millions, not millions of dollars | ||||||||||||||||
63 | 8/22/2020 | Exercise 5.3.19a | and VMI is the explanatory variable | VHI, not VMI (see also b, c, d) | Soma | |||||||||||||||
64 | 8/22/2020 | Exercise 5.3.19 solution | c and d | delete "significantly" in interpretation | ||||||||||||||||
65 | 8/23/2020 | Exercise 5.4.12 | part c says "within 1 degree C" | change to: until the temperature of the probe is 1°C above the temperature of the room | Soma | |||||||||||||||
66 | 8/25/2020 | Exercise 5.CE.10 | missing info on how sex is coded in the dataset | sex = 1, if female, and = 0, if male | Soma | |||||||||||||||
67 | 9/2/2020 | Exercise 6.2.16 | part c says "shots made" | change to "whether or not a shot is made" | ||||||||||||||||
68 | 9/2 | Exercise 6.3.4 | part d refers to the slope | is the slope of age | ||||||||||||||||
69 | 9/2/2020 | Exercise 6.3.7 | part e says which category | change to which combination | ||||||||||||||||
70 | Exercise 6.3.19 | prediction table is incorrect and correct classification rate is incorrect | c. .780 | |||||||||||||||||
71 | Exercise 6.3.20 | prediction tables are incorrect and correct classification rates are incorrect | a. .780, b. .780, c. .786 (d. replace "variable" with "term") | |||||||||||||||||
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73 | Exercise 6.CE.3 | d. "moderate (but not strong) evidence" | "little evidence" | |||||||||||||||||
74 | Applet Note | text references cases were applet only lists one coefficient for binary variable | output now gives both coefficients but doesn't include SE, t, p-value for the other coefficient | |||||||||||||||||
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