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Week12

Human Systems Data

Human Systems Engineering 598 is a graduate level methods course on data analytics with human subjects data at Arizona State University. The instructor is Dr. Erin Chiou, Assistant Professor of Human Systems Engineering.

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Week12

Maxine in Human Systems Data

Apr 6, 2017

Analysis of variance (AONVA) a way of testing hypothesis when there are more than two means involved. T-test is used only for two means comparison and its repeatedly using may cause a severe inflation of Type I error. Fisher developed the ANOVA and that’s why ANOVA use F value in report. In hypothesis analysis, the null hypothesis is usually set as…

Anders Orn in Human Systems Data

Apr 5, 2017

“R”-ent you glad I ran an ANOVA?

Howdy!

I recently wrote a blog post exploring multiple regression in R — — and more specifically, with my masters thesis data! It was really quick and only scratched the surface, but it was a great experience and I thought it was a cool way to…

1 response

Jacob Willinger in Human Systems Data

Apr 5, 2017

Factorial Design in R

This week our instruction was to work through an R tutorial for ANOVA, found here: http://www.statmethods.net/stats/anova.html. I am familiar enough with the concept that I decided to branch away from a conventional ANOVA and focus instead on working through a factorial design. I’ve always…

Verica Buchanan in Human Systems Data

Apr 4, 2017

Overview of ANOVA Analysis

Assumption of ANOVA

First of all, before running an ANOVA there are several assumptions that need to be met.

1) The populations from which the samples are drawn need to be normally distributed.

2 responses

Sainjeev Srikantha in Human Systems Data

Apr 5, 2017

ANOVA Venture

An ANOVA is an analysis of variance used to compare the means of groups within data (One-way Analysis of Variance (ANOVA), 2011). This sounds a little more complicated than it really is, so lets break it down. What is an analysis of variance of means? This is simply a difference in the averages when…

essam al-masalmeh in Human Systems Data

Apr 4, 2017

ANOVA 101

Since this blog targets different audience spectrum, I thought it will be useful to introduce basic information about ANOVA (analysis of variance) in a question format.

What is ANOVA?

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Kyle Walter in Human Systems Data

Apr 5, 2017

OLAP Cube — Check yo’ data before you wreck yo’ data

An ANOVA is one of the most common types of statistical analyses performed within the social sciences. It allows you to compare two or more means to see the differences. However, what many people forget to check are the assumptions which…

Pouria Salehi in Human Systems Data

Apr 5, 2017

ANOVA in [R] vs SPSS

what is the ANOVA?
what are its assumptions?
When should or should not be applied?

In 1918, Ronald Fisher developed an extension to the t-test, in order to solve the problem of t-test and Z test: allowing to have…

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Lisa Lacouette in Human Systems Data

Apr 5, 2017

The Importance of Due Diligence

The class blog assignment for this week is to explore analysis of variance (ANOVA). I started my research by stepping through the tutorial that was assigned. I did what I have done many times this semester, I opened my SPSS textbook from last semester (Field, 2013). This…

Maya Toteva in Human Systems Data

Apr 5, 2017

Flash back to introductory statistic — ANOVA

ANOVA is one of the most frequently used statistical analyses in research. It is used to compare the means across three or more independent groups instead of multiple t-test to avoid the multiple comparisons problem. Three or more groups cannot be…