1208 search results for "excel"

Structural Equation Modelling in R

September 20, 2009
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Structural Equation Modelling in R

Structural Equation Modelling (SEM) Software is frequently used in psychology. This post discusses the exciting prospect of greater support for SEM in R. ...I have used SEM to:Run confirmatory factor analyses to examine the measurement structure of mul...

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Welcome to Blogistic Reflections! (A blog created entirely in Emacs org-mode)

September 19, 2009
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Welcome to Blogistic Reflections! (A blog created entirely in Emacs org-mode)

John Tukey’s preface to Exploratory Data Analysis begins with a useful rule, “It is important to understand what you can do before you learn to measure how well you seem to have done it.” When I decided I wanted to start a blog concentrating on statistics, R, and Emacs, I thought I had better learn

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Power Analysis for mixed-effect models in R

September 18, 2009
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Power Analysis for mixed-effect models in R

The power of a statistical test is the probability that a null hypothesis will be rejected when the alternative hypothesis is true. In lay terms, power is your ability to refine or "prove" your expectations from the data you collect. The most frequent...

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Power Analysis for mixed-effect models in R

September 18, 2009
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Power Analysis for mixed-effect models in R

The power of a statistical test is the probability that a null hypothesis will be rejected when the alternative hypothesis is true. In lay terms, power is your ability to refine or "prove" your expectations from the data you collect. The most frequent...

Read more »

RQuantLib 0.3.0 released

September 5, 2009
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Earlier this evening, I rolled up a new version of RQuantLib. It has been pushed to CRAN and Debian, and source and binary version should appear on the respective mirror networks in due course. This version, the first in a new '0.3.*' release seri...

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RQuantLib 0.3.0 released

September 5, 2009
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Earlier this evening, I rolled up a new version of RQuantLib. It has been pushed to CRAN and Debian, and source and binary version should appear on the respective mirror networks in due course. This version, the first in a new '0.3.*' release series, ...

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RQuantLib 0.3.0 released

September 5, 2009
By

Earlier this evening, I rolled up a new version of RQuantLib. It has been pushed to CRAN and Debian, and source and binary version should appear on the respective mirror networks in due course. This version, the first in a new '0.3.*' release seri...

Read more »

CO2 and Temperature Trends

August 31, 2009
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CO2 and Temperature Trends

In a previous post I discussed problems with an Excel based CO2 and temperature trend chart that used 2 Y axes. Double axis charts can be misleading because they may distort the Y axis for one of the series. In this post I show another example of am ineffective double Y axis CO2 and temperature

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Web-site trend analysis with data from Google Analytics

August 25, 2009
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Web-site trend analysis with data from Google Analytics

This post is a summary of my two previous posts on the trend analysis with the Cox-Stuart test and on simple linear regression. The goal that we propose is to assess the trend in the number of visits received from a site over a long time. I use Google Analytics, because this tool allows us to save...

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Web-site trend analysis with data from Google Analytics

August 25, 2009
By
Web-site trend analysis with data from Google Analytics

This post is a summary of my two previous posts on the trend analysis with the Cox-Stuart test and on simple linear regression. The goal that we propose is to assess the trend in the number of visits received from a site over a long time. I use Google Analytics, because this tool allows us to save...

Read more »