Psychology 480/480L
Intermediate Statistics

ANNOUNCEMENTS

GRADED EXERCISE ON MEDIATION AND SEQUENTIAL REGRESSION (CLOSED)
How to do the graded exercise in R (text)
Answers to the graded exercise (text)
This exercise MUST be submitted by 1:00 PM Tuesday, May 3rd. No late exercises this time. Grades are due!

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COURSE MATERIALS

Psyc 480 Course Syllabus -- Spring 2022 (PDF version)
Psyc 480 Course Syllabus -- Spring 2022 (HTML version)
Spring Semester Calendar (Goes to CCU Website.)
My Class Schedule and "Office Hours"

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Articles

IMPORTANT NOTE: Some of the videos that are posted here were recorded during Fall 2020 and I wasn't smart enough at the time not to mention dates or times in those videos. Please IGNORE any reference to days or times in these videos!



REVIEW MATERIALS

OPTIONAL READINGS

If you don't know this material, you're sunk already!

  • Introduction to the Basics of Statistics (PDF)
  • Research Design (some basic stuff) (PDF)
  • If you don't know how to round off, here is an article you should read at least the first four sections of (through 4 Tie-breaking): Rounding (external). The majority of students who take this class don't know how to round off! But rounding errors are errors and will cost you points on exams. You can skim or skip lightly over the sections called "Rounding to a specified increment" and "Rounding to integer." Be sure to read "Tie breaking", however. In this class, we will follow the "Round half to even" rule. Be sure you read far enough to find out what that is!
  • Here is a short course on rounding.
  • Likewise, if you don't have an understanding of significant figures (significant digits), you should read this article: Significant Figures (external).
  • If you are not familiar with scientific notation for large and small numbers, you should read about it here: Scientific Notation (external). In particular, pay attention to "E notation." You MUST know how to deal with this! I am not going to cover it in class! This is something you should have learned YEARS ago. Our software will often print very large and very small numbers in scientific notation. I will NOT accept scientific notation in answers on tests, however. You need to know how to convert!

    This class will be a test of your basic math and algebra skills. If you are "not a math person," you are definitely in the wrong place!!

    Here are some math errors I see commonly in this class. If you have any of these problems, NOW is the time to get them remedied. This is not a elementary math class. We do not have time to learn basic math in here!
    • Not understanding order of operations.
    • Not understanding the difference between positive and negative numbers.
    • Not understanding rules for signs (negative times negative is positive, etc.).
    • Not understanding greater than and less than.
    • Not understanding how decimal numbers between 0 and 1 work. (Absolutely crucial!!)
    • Not understanding fractions and proportions.
    • Not understanding that the square of a number can't be negative (believe it or not).
    • Not understanding square roots and logarithms.
    • Not understanding the rules for exponents.
    • Not understanding basic factoring of a simple algebraic expression.
    • Not understanding simple linear equations (slope, intercept, etc.).
    • Not understanding how to read a graph and extract information from it.
    • The list could go on (and on and on!), but I'd say those are the most important ones.


R Stuff For People Who Want It

Other Stuff For People Who Want It

Online Statistics Books (these are all external links)

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