A description of the concepts behind Analysis of Variance. Also, see this site: http://www.psych.utah.edu/stat/introstats/anovaflash.html for a "hands-on" experience.

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J David Eisenberg

An introduction to the concept of degrees of freedom. This is an "arm-waving" proof; if you want something that is mathematically rigorous, please look elsewhere :)

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J David Eisenberg

How to use the tar command to create and unpack file archives

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J David Eisenberg

An explanation of how to compute the chi-squared statistic for independent measures of nominal data.
For an explanation of significance testing in general, see http://evc-cit.info/psych018/hyptest/index.html
There is also a chi-squared calculator at http://evc-cit.info/psych018/chisquared/index.html

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J David Eisenberg

When you do statistics, you need to know the level of measurement for your variables in order to choose the proper statistical tests.

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J David Eisenberg

Shows that you can write an expression like "not (A or B)" as "(not A) and (not B)". Similarly, "not(A or B)" can be written as "(not A) and (not B)" Which way should you write an expression? Whichever way most clearly states the intent of your program.

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J David Eisenberg

Doing a chi-squared calculation with R. Special comment about doing correction for 2 by 2 designs.

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J David Eisenberg

Use absolute URLs for links to other people's sites; use relative URLs for links within your site.

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J David Eisenberg

Export data from LimeSurvey for further analysis in R. We export as CSV rather than as an R data file, because it makes things slightly easier in the long run.

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J David Eisenberg

Continued discussion of the formula for the t-test.

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J David Eisenberg

How to show (or not show) questions in Limesurvey, depending upon the answers to other questions.

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J David Eisenberg

How to do a "desk check" of your program plan. Additional audio by my cat, Big Tony.

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J David Eisenberg

A description of the idea behind the test, and a simple calculation of the statistic.

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J David Eisenberg

How to design a data table and enter data into it using SOFA (statistics open for all)

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J David Eisenberg

Creating questions that require numerical input and a list of choices.

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J David Eisenberg

Use R to do related t-tests on interval data and Wilcoxson T tests on ordinal data.

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J David Eisenberg

This video describes the formula for a t-test with related samples (repeated measures). It's an informal discussion of why the formula is the way it is.

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J David Eisenberg

How to back up a course in Moodle so you can restore it later or import it in another Course Management System (like Canvas).
Note: If you are using Chrome, when you download the file, it will put it in a default folder (probably "Downloads"). You can find out where the file is by clicking the arrow next to the file name in the ribbon at the bottom of the page and selecting "Show in folder". This will open the file manager and show you exactly where Chrome saved the file.

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J David Eisenberg

Using R to calculate the t-test with repeated measures

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J David Eisenberg

Using R to find correlations in data from a LimeSurvey survey

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J David Eisenberg

Creating a survey: entering a description, welcome, and end page; setting presentation and navigation options.

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J David Eisenberg

Feeding the feral cats at Evergreen Valley College. The loud noise in the background is an electrical transformer. The tortoiseshell cat is Misha, the tamest one of the group. I hope to get a better version later this week or next week.

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J David Eisenberg

Is subtraction as taught in one of the common core methods really that complex or silly?

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J David Eisenberg

Use SOFA to determine if the average height of men and women is significantly different.

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J David Eisenberg

Calculating mean, standard deviation, minimum, and maximum with SOFA

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J David Eisenberg

A description of how "reduce" works.

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J David Eisenberg

A non-rigorous explanation of the formula for a t-test with unrelated samples.

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J David Eisenberg

A walk in the Times Square area; film made with Polaroid (TM) Cube, edited with OpenShot.

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J David Eisenberg

When each person has multiple scores on a variable, you need to do a paired t-test to see if the scores are significantly different.

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J David Eisenberg

Using pre-built lists to add Likert scale items to a survey

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J David Eisenberg

You can tell SOFA to use only certain data value. In this video, we use the example of an analysis of all data where the "number of shoes" is less than 70.

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J David Eisenberg

A quick trip around the farmers' market on Sunday. I am using the Parashoot wearable camera, and still have problems getting the thing attached straight.

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J David Eisenberg

The Wilcoxson Signed Ranks T test and Mann-Whitney U test for testing differences in ordinal data. Note: the book referred to in the video is "Introduction to Research Methods in Psychology, 3rd Edition" by Dr. Hugh Coolican. ISBN 0-340-90757-6. Great book, well written, and fun to read!

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J David Eisenberg

How to export data for use with SOFA statistics or R

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J David Eisenberg

Experimental video made with Polaroid Cube+ attached to the bill of my cap. First section of video was recorded with a Samsung WB-350F

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J David Eisenberg

You can import data into SOFA from a variety of sources. This video shows how to import data from a comma-separated value (CSV) file. The laughter you hear in the video is when my cat decided to jump up on the desk to assist me.

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J David Eisenberg

Sometimes you have to edit data before you perform statistical analysis on it. Here is an example of some editing of survey data.

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J David Eisenberg

The chi-squared test is appropriate when your data is nominal (categorical).

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J David Eisenberg

Use HTML to create a link from your site to someone else's site.

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J David Eisenberg

A quick introduction to the Integrated Development Environment (IDE) I will be using in this course.

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J David Eisenberg

Using Photoshop to colorize a drawing. Drawing by WenM from Bay Area Artists Unite. Video taken in Japantown in San Francisco. There's a lot of background noise; it was busy there.

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J David Eisenberg

How to keep score at a match for a Santa Clara Valley Wrestling Association tournament.

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J David Eisenberg

Use R to do unrelated t-tests for interval data and the Mann-Whitney U test for ordinal data.

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J David Eisenberg

Demo of LibreOffice's formula editor and Maxima's plotting abilities; these are free, open source tools that might be useful for people who teach math. I did this video for the Math faculty at Evergreen Valley College in San Jose; that's the school I'm referring to in the first part of the video.

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J David Eisenberg

Instructions for finding a room in the Acacia building on the campus of Evergreen Valley College in San Jose, CA

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J David Eisenberg

How to add a "metal texture" to a drawing. Drawing by WenM from Bay Area Artists Unite.

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J David Eisenberg

You can use SOFA to create frequency tables for two or more variables. In this variable, we construct a table showing frequency of color choice by gender.

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J David Eisenberg

Using Photoshop to colorize a drawing. Drawing by WenM from Bay Area Artists Unite.

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J David Eisenberg

Using Photoshop to colorize a drawing. Drawing by WenM from Bay Area Artists Unite.

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J David Eisenberg