Statistics 123a
###
Introduction to Statistical Methods And Probabilistic Reasoning

Statistics 123a

Fall 1995

Instructor: Phil Everson

Office: 24 Hillhouse Ave, Room 208

Phone: 432-0638

E-mail: * everson@stat.yale.edu*

Office Hours: Thurs: 2:30-4:00 (or by appointment)

Lectures: Tues, Thurs, 1:00pm--2:15pm, WLH 208

StatLab hours: Monday 1:00-5:00

### Objectives and Prerequisites

The objectives of this course are
- to provide sufficient skills to enable students to apply simple
statistical techniques with the aid of a computer.
- to help students be informed and critical readers of quantitative
arguments.

Some familiarity with elementary algebraic notation at the high school
level is assumed.
Graduate students who wish to tailor the course to relate to their research
are also invited to discuss this with the instructor.
### Outline of topics

The following is an outline of material covered in the course:
- Descriptive statistics and exploratory data analysis
- Fundamentals of Probability
- Random variables and probability distributions
- Producing data: Surveys, Experiments, Observational Studies
- Elements of statistical inference: estimation and hypothesis testing
- Statistical analysis with one sample
- Statistical analysis with two samples

### Textbook

D. Moore and G. McCabe. (2nd ed.) Introduction to the Practice of
Statistics
**Other References:**

D. Freedman, R. Pisani, and R. Purves *Statistics*

R. Johnson and G. Bhattacharyya * Statistics: Principles and Methods*

J. Devore and R. Peck * Statistics: The Exploration and Analysis of
Data*

J. Tanur, et al *Statistics: A Guide to the Unknown*

### Homework

Homework and other handouts will be distributed at lectures, or may be picked
up outside my office.
Homework assignments will be due each week.
The first assignment will be due September 19.
Homework is due by 3:00pm on the due date.
You may hand in your assignment to the course assistant before that time,
drop it off at the lecture, or leave it in the box outside my office.

You may discuss homework problems with other students, but you should write
up your solutions independently.
Always show how you obtained your answers.

The official course policy is that ** no late homework will be accepted**.
In return for your timely submission of homework, we will make every
effort to return graded homework and examinations promptly.
This rapid feedback should help you be aware of any problems in your
own understanding of the material.

### Exams

There will be two in-class hour exams during the semester, and a 2-hour
final exam.
The dates for the exams are:
Exam 1: October 10

Exam 2: November 16

All exams will be open book (textbook and notes).
You may want to prepare a formula sheet for easy reference.
A hand calculator is necessary for all exams.

### Computing Assignments

Some homeworks will include computer assignments to be done using a
statistics computing package. We have Monday afternoons reserved at the
statlab (140 Prospect St., room 101). The computer package Minitab is
available on the PC's there, and I will prepare detailed descriptions
for getting you started with this program. You may use any other
statistical package that is convenient, although we may not be able to
provide support for these. Do not hand in piles of computer paper with
your homework; cut out the relevant pieces and paste them in your
written assignments (or incorporate them using a word processor.
### Grades

Grades will be based on:
Homework: 30%

Exam 1: 20%

Exam 2: 20%

Final Exam: 30%