## Elementary Statistics and Inference (STAT:1020, Bognar)

### Homework

H1 (Due 1/26): Ignore questions posed in book. Just answer the following.
Chapter 1: 11*, 13*, 14*, 25**, 26**
Chapter 2: 49***, 55****
* = Is the variable is categorical or quantitative?
** = What is the population and sample?
*** = (a) Make a histogram. Let the first bin be [10,20). (b) Make a stem-and-leaf plot.
**** = (a) Make a histogram. Let the first bin be [20,50). (b) Compute the sample mean $\bar{x}$ and sample median $Q_2$. (c) Is $\bar{x}$ or $Q_2$ a better description of centrality? Why?

H2 (Due 2/2):
Chapter 12: 40, 47(a), 48(a)
Worksheet: h2.pdf

H3 (Due 2/9):
Chapter 12: 33, 37, 38, 54
Worksheet: h3.pdf

H4 (Due 2/16):
Chapter 12: 66, 69, 77, 82, 85, 89, 90

H5 (Due 2/23):
Chapter 12A (yes, 12A): 15, 18*, 23, 26, 30, 37**, 38***
* = Let $X=$ winnings. Part (a) is asking for the probability distribution of $X$.
** = We are selecting without replacement. Let $X=$ number of good batteries. Part (a) is asking for the probability distibution of $X$.
*** = We are selecting without replacement. Let $X=$ number of males. Part (a) is asking for the probability distibution of $X$.

H6 (Due 3/1):
Chapter 12A (yes, 12A): 7, 8
Worksheet: h6.pdf

H7 (Due 3/8):
Worksheet: h7.pdf

H8 (Due 3/22):
Worksheet: h8.pdf

H9 (Due 3/29):
Worksheet: h9.pdf

H10 (Due 4/5):
Worksheet: h10.pdf

H11 (Due 4/12):
Worksheet: h11.pdf

H12 (Due 4/19):
Worksheet: h12.pdf

H13 (Due 4/26):
Chapter 13: 35
Worksheet: h13.pdf

H14 (Due 5/3):
Worksheet: h14.pdf

### Probability Distribution Applets

Discrete Distributions
Continuous Distributions
Statistical Inference

Syllabus

Correlation scatterplots

Statistical Tables (Z, t, and chi-square tables)

R Project Homepage

### Teaching Assistants

Edward Addison (MS candidate, Actuarial Science), email
Office: 366 SH, Office Hours: Noon-1:00 Tu, 3:00-4:00 Tu, 6:00-7:00 Tu

B23: 11:00-11:50 Tuesday (75 SH)
B25: 2:00-2:50 Tuesday (22 SH)
B29: 5:00-5:50 Tuesday (31 SH)
B30: 5:00-5:50 Thursday (31 SH)

Okechukwu Oboh (MS candidate, Actuarial Science), email
Office: 356 SH, Office Hours: 3:00-4:30 F

B31: 6:30-7:20 Tuesday (3 SH)
B32: 6:30-7:20 Thursday (3 SH)

Yiran Zeng (MS candidate, Statistics), email
Office: 348 SH, Office Hours: 12:30-3:30 Tu

B24: 11:00-11:50 Thursday (75 SH)
B26: 2:00-2:50 Thursday (22 SH)
B27: 3:30-4:20 Tuesday (74 SH)
B28: 3:30-4:20 Thursday (75 SH)

### Contact Information

E-Mail: matthew-bognar@uiowa.edu
Office: 358 SH
Office Hours: 9:30-11:00 W, 1:30-3:00 Th