I am slowly going through Statistical Analysis with Excel book and I am making simulation worksheets to understand the concepts.
I have created the worksheet with two populations and two pulled samples to get my mind on standard error of the difference between means which is used in Two-Sample Hypothesis Testing. I have used both Z-Test (when population variances are known) and T-Test (when we don’t know population data).
Confidence intervals gives us the range of a given statistic when generalizing from a sample to a population. The simplest example could be mean of a sample (e.g. average height) – what we are interested in are the generalizations (or inferences) from this sample to a population (e.g. average height in population). Due the sampling error we are not…
(Not so) Random Thoughts Good Bye and Thanks to Hammarby IF The season 2013 ended with the last game on the home stadium Tele2 Arena on November 2ndwith a win against Östersunds FK. It was a pretty rough ride this season with a coach change, new stadium and new training ground (currently in the making process). Unfortunately, we haven’t…
Over the last month I have been learning R programming language that is completely FREE and used extensively in statistics and data analysis. I have been also playing with ggplot2 which is a great graphics package for R, along with knitr which was used to produce this blog post/report.
Understanding Central Limit Theorem is of EXTREME importance in statistics. This concept usually sets the boundary line between people who understand statistics and people who don’t.
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