Statistics 250H
Assignments

Assigned Due Assignment

Mon, Jan 7 Wed, Jan 9 Read section 1.3 on histograms before class on Wednesday.

Wed, Jan 9 Fri, Jan 11 Read: pp. 210-218 (don't get too bogged down with the few terms we haven't covered yet, such as variance. Variance is nothing but the square of standard deviation, so it's another measure of spread.)
Do: p. 219, #4.

Fri, Jan 11 Mon, Jan 14 Do: p. 220, #10; p. 219, #2 (in addition to the 90% CI, also find a 99% CI).

Mon, Jan 14 Wed, Jan 16 Read: pp. 186-189
Do: pp. 191-192, #8 and #10

Wed, Jan 16 Fri, Jan 18 Read: pp. 262-264
Do: pp. 266-267, #8

Fri, Jan 18 Mon, Jan 21 Read: pp. 267-269
Do: p. 269, #2 and #4

Mon, Jan 21 Wed, Jan 23 Read: pp. 270-273, plus read Problem #7, p. 273
Do: p. 273, #2 and #6. Answer each question (a) using previous data and (b) without any prior knowledge.

Wed, Jan 23 Fri, Jan 25 Read: pp. 227-229 and pp. 274-275
Do: p. 230, #6. Also, suppose that the study in #6 is conducted and we obtain p-hat=.538 and n=814. Compute a p-value for the test and interpret it at level alpha=.05.

Fri, Jan 25 Mon, Jan 28 Read: pp. 278-286. Notice the differences and similarities between Section 8.5 and Section 8.6.
Do: p. 287, #2 and #5. In each, give a 95% confidence interval for the difference between the true proportions.

Mon, Jan 28 Wed, Jan 30 Read: pp. 46-49 (Example 1.5.2 through sample range)
Do: Calculate, both by hand and using Minitab, the sample variance and standard deviation for the sample 11, 13, 14, 15, 16, 21. How do the answers change if you add 10 to each number? If you multiply each by 10?
Hints: Go to a PC lab somewhere and start Minitab. Type the sample into one column, say C1, with one observation per cell. Then select Basic Statistics...Display Descriptive Statistics from the Stat menu. Enter C1 in the Variables window and click OK. You can copy and paste your results into a word processor or print them out straight from Minitab. Print out your Minitab results, then use the same sheet to answer the questions by hand to save paper.

Wed, Jan 30 Fri, Feb 1 Read: pp. 220-224 and pp. 230-235
Do: p. 225, #6. Give a p-value to answer the last question.

Fri, Feb 1 Mon, Feb 4 Read: pp. 315-318
Do: p. 319-320, #2 and #4

Mon, Feb 4 Wed, Feb 6 Read: pp. 290-292, pp. 302-305
Do: Minitab assignment 1

Wed, Feb 6 Fri, Feb 8 Read: pp. 310-312.
Do: p. 312-313, #2 and #6 (the Smith-Satterthwaite approximations give df of 123 and 12, respectively)

Mon, Feb 11 Wed, Feb 13 Read: pp. 80-85.
Do: p. 85-87, #4 and #10. In #4(e), give probabilities for all 16 paths if you can. In #10(c), explain how Mendel's first law is used in the answer.

Wed, Feb 13 Fri, Feb 15 Read: pp. 88-89 and pp. 90-94.
Do: p. 94-95, #4 and #8 (Try to answer #4 with 5 persons--but don't construct a tree)

Fri, Feb 15 Wed, Feb 20 Read: pp. 97-98 and pp. 99-100 (notice problem #9 on p. 99)
Do: As we discussed in class, there are 52 choose 5 or 2,598,960 different 5-card poker hands possible. There are nine categories of hands: Royal flush, straight flush, 4 of a kind, full house, flush, straight, 3 of a kind, 2 pair, and 1 pair (we won't consider the tenth category, which is none of the above). See (for example) http://www.pagat.com/vying/pokerrank.html#standard if you need an explanation of the hands. Your assignment is to demonstrate how to calculate the number of hands in each category.

Fri, Feb 22 Wed, Feb 27 Read: pp. 111-114 and pp. 115-118.
Do: p. 114-115, #2 and #6; p. 119, #4
NOTE: I changed the deadline for this assignment.

Wed, Feb 27 Fri, Mar 1 Read: pp. 128-131 and pp. 134-135 and p. 136, #9.
Do: p. 136-137, #8 and #10.

Fri, Mar 1 Mon, Mar 11 Read: pp. 120-124 and pp. 137-141 and p. 125, #5 and #6.
Do: p. 141, #2 and #4 and pp. 126-127, #8 and #14. In #14, approximate the odds ratio in addition to the relative risk.

Mon, Mar 11 Wed, Mar 13 Read: pp. 143-149
Do: p. 150-151, #4 and #8.

Wed, Mar 13 Fri, Mar 15 Read: pp. 156-162
Do: p. 164, #8 and #10.

Fri, Mar 15 Mon, Mar 18 Do: Practice Quiz #8

Mon, Mar 18 Wed, Mar 20 Read: pp. 327-330
Do: Practice Quiz #9

Wed, Mar 20 Mon, Mar 25 Read: Practice Quiz #10
Do: pp. 338-9, #2

Mon, Mar 25 Wed, Mar 27 Read: pp. 341-344
Do: p. 350, #4. Use Tukey pairwise comparisons with family error rate 5%

Wed, Mar 27 Fri, Mar 29 Read: None
Do: p. 339, #3. In addition to the questions asked, use both Levene's test and a residual plot to comment on the appropriateness of the ANOVA assumptions.

Fri, Mar 29 Mon, Apr 1 Read: pp. 409-415 and pp. 418-420
Do: p. 415, #2, (a), (b), and (d) only (Interpret the p-value). Also, do p. 425, #2, (a), (b), and (c) only (Verify the equation in Definition 11.3.3, p. 412). Use Minitab for both questions!

Mon, Apr 1 Wed, Apr 3 Read: pp. 398-403 (including Estimating an individual response)
Do: p. 406-7, #4 (a), (c), and (d).

Wed, Apr 3 Fri, Apr 5 Read: pp. 426-430
Do: In the fall semester of 1999, a survey was given to over 200 people taking statistics 200. Assume that the people taking the survey are a representative sample of Penn State students (this is not a reasonable assumption; however, we make it here only for the purpose of this assignment). Download the survey data (save it, then load it into Minitab as a .txt worksheet). Read the survey questions, then answer the following questions by whatever means seem appropriate: Is there a statistically significant relationship between grade point average (question 18) and:

living situation (question 7)
hours studying per day (question 21)
parties attended per month (question 57)

Fri, Apr 5 Mon, Apr 8 Read: pp. 441-451
Do: p. 452, #4.

Mon, Apr 8 Wed, Apr 10 Read: pp. 454-458
Do: p. 458, #2.

Wed, Apr 10 Fri, Apr 12 Read: pp. 501-504, ignoring the stuff on Poisson distributions
Do: p. 470, #2 (a) and (b): In part (a), create a normal probability plot instead of a Lilliefors test and comment on the normality assumption. Also do p. 505, #2.

Fri, Apr 12 Mon, Apr 15 Read: pp. 471-474 and pp. 477-480
Do: p. 481-482, #2 and #4.

Mon, Apr 15 Wed, Apr 17 Read: pp. 483-485 and p. 486, Problem #5.
Do: p. 486, #4: Do this one by hand AND using Minitab (for Minitab, look under Stat...Nonparametrics...Mann-Whitney).

dhunter@stat.psu.edu

Assigned	Due	Assignment
Mon, Jan 7	Wed, Jan 9	Read section 1.3 on histograms before class on Wednesday.
Wed, Jan 9	Fri, Jan 11	Read: pp. 210-218 (don't get too bogged down with the few terms we haven't covered yet, such as variance. Variance is nothing but the square of standard deviation, so it's another measure of spread.) Do: p. 219, #4.
Fri, Jan 11	Mon, Jan 14	Do: p. 220, #10; p. 219, #2 (in addition to the 90% CI, also find a 99% CI).
Mon, Jan 14	Wed, Jan 16	Read: pp. 186-189 Do: pp. 191-192, #8 and #10
Wed, Jan 16	Fri, Jan 18	Read: pp. 262-264 Do: pp. 266-267, #8
Fri, Jan 18	Mon, Jan 21	Read: pp. 267-269 Do: p. 269, #2 and #4
Mon, Jan 21	Wed, Jan 23	Read: pp. 270-273, plus read Problem #7, p. 273 Do: p. 273, #2 and #6. Answer each question (a) using previous data and (b) without any prior knowledge.
Wed, Jan 23	Fri, Jan 25	Read: pp. 227-229 and pp. 274-275 Do: p. 230, #6. Also, suppose that the study in #6 is conducted and we obtain p-hat=.538 and n=814. Compute a p-value for the test and interpret it at level alpha=.05.
Fri, Jan 25	Mon, Jan 28	Read: pp. 278-286. Notice the differences and similarities between Section 8.5 and Section 8.6. Do: p. 287, #2 and #5. In each, give a 95% confidence interval for the difference between the true proportions.
Mon, Jan 28	Wed, Jan 30	Read: pp. 46-49 (Example 1.5.2 through sample range) Do: Calculate, both by hand and using Minitab, the sample variance and standard deviation for the sample 11, 13, 14, 15, 16, 21. How do the answers change if you add 10 to each number? If you multiply each by 10? Hints: Go to a PC lab somewhere and start Minitab. Type the sample into one column, say C1, with one observation per cell. Then select Basic Statistics...Display Descriptive Statistics from the Stat menu. Enter C1 in the Variables window and click OK. You can copy and paste your results into a word processor or print them out straight from Minitab. Print out your Minitab results, then use the same sheet to answer the questions by hand to save paper.
Wed, Jan 30	Fri, Feb 1	Read: pp. 220-224 and pp. 230-235 Do: p. 225, #6. Give a p-value to answer the last question.
Fri, Feb 1	Mon, Feb 4	Read: pp. 315-318 Do: p. 319-320, #2 and #4
Mon, Feb 4	Wed, Feb 6	Read: pp. 290-292, pp. 302-305 Do: Minitab assignment 1
Wed, Feb 6	Fri, Feb 8	Read: pp. 310-312. Do: p. 312-313, #2 and #6 (the Smith-Satterthwaite approximations give df of 123 and 12, respectively)
Mon, Feb 11	Wed, Feb 13	Read: pp. 80-85. Do: p. 85-87, #4 and #10. In #4(e), give probabilities for all 16 paths if you can. In #10(c), explain how Mendel's first law is used in the answer.
Wed, Feb 13	Fri, Feb 15	Read: pp. 88-89 and pp. 90-94. Do: p. 94-95, #4 and #8 (Try to answer #4 with 5 persons--but don't construct a tree)
Fri, Feb 15	Wed, Feb 20	Read: pp. 97-98 and pp. 99-100 (notice problem #9 on p. 99) Do: As we discussed in class, there are 52 choose 5 or 2,598,960 different 5-card poker hands possible. There are nine categories of hands: Royal flush, straight flush, 4 of a kind, full house, flush, straight, 3 of a kind, 2 pair, and 1 pair (we won't consider the tenth category, which is none of the above). See (for example) http://www.pagat.com/vying/pokerrank.html#standard if you need an explanation of the hands. Your assignment is to demonstrate how to calculate the number of hands in each category.
Fri, Feb 22	Wed, Feb 27	Read: pp. 111-114 and pp. 115-118. Do: p. 114-115, #2 and #6; p. 119, #4 NOTE: I changed the deadline for this assignment.
Wed, Feb 27	Fri, Mar 1	Read: pp. 128-131 and pp. 134-135 and p. 136, #9. Do: p. 136-137, #8 and #10.
Fri, Mar 1	Mon, Mar 11	Read: pp. 120-124 and pp. 137-141 and p. 125, #5 and #6. Do: p. 141, #2 and #4 and pp. 126-127, #8 and #14. In #14, approximate the odds ratio in addition to the relative risk.
Mon, Mar 11	Wed, Mar 13	Read: pp. 143-149 Do: p. 150-151, #4 and #8.
Wed, Mar 13	Fri, Mar 15	Read: pp. 156-162 Do: p. 164, #8 and #10.
Fri, Mar 15	Mon, Mar 18	Do: Practice Quiz #8
Mon, Mar 18	Wed, Mar 20	Read: pp. 327-330 Do: Practice Quiz #9
Wed, Mar 20	Mon, Mar 25	Read: Practice Quiz #10 Do: pp. 338-9, #2
Mon, Mar 25	Wed, Mar 27	Read: pp. 341-344 Do: p. 350, #4. Use Tukey pairwise comparisons with family error rate 5%
Wed, Mar 27	Fri, Mar 29	Read: None Do: p. 339, #3. In addition to the questions asked, use both Levene's test and a residual plot to comment on the appropriateness of the ANOVA assumptions.
Fri, Mar 29	Mon, Apr 1	Read: pp. 409-415 and pp. 418-420 Do: p. 415, #2, (a), (b), and (d) only (Interpret the p-value). Also, do p. 425, #2, (a), (b), and (c) only (Verify the equation in Definition 11.3.3, p. 412). Use Minitab for both questions!
Mon, Apr 1	Wed, Apr 3	Read: pp. 398-403 (including Estimating an individual response) Do: p. 406-7, #4 (a), (c), and (d).
Wed, Apr 3	Fri, Apr 5	Read: pp. 426-430 Do: In the fall semester of 1999, a survey was given to over 200 people taking statistics 200. Assume that the people taking the survey are a representative sample of Penn State students (this is not a reasonable assumption; however, we make it here only for the purpose of this assignment). Download the survey data (save it, then load it into Minitab as a .txt worksheet). Read the survey questions, then answer the following questions by whatever means seem appropriate: Is there a statistically significant relationship between grade point average (question 18) and: living situation (question 7) hours studying per day (question 21) parties attended per month (question 57)
Fri, Apr 5	Mon, Apr 8	Read: pp. 441-451 Do: p. 452, #4.
Mon, Apr 8	Wed, Apr 10	Read: pp. 454-458 Do: p. 458, #2.
Wed, Apr 10	Fri, Apr 12	Read: pp. 501-504, ignoring the stuff on Poisson distributions Do: p. 470, #2 (a) and (b): In part (a), create a normal probability plot instead of a Lilliefors test and comment on the normality assumption. Also do p. 505, #2.
Fri, Apr 12	Mon, Apr 15	Read: pp. 471-474 and pp. 477-480 Do: p. 481-482, #2 and #4.
Mon, Apr 15	Wed, Apr 17	Read: pp. 483-485 and p. 486, Problem #5. Do: p. 486, #4: Do this one by hand AND using Minitab (for Minitab, look under Stat...Nonparametrics...Mann-Whitney).

Statistics 250HAssignments

Statistics 250H
Assignments