Sample size and power calculate using standard error
One of key questions in experimental design is “How many measurements should be included in the sample?” In order to answer this, 4 parameters are required: type I error, value […]
Category Archives: Statistics
Standard Deviation and Standard Error (of Mean)
The terms “standard error” and “standard deviation” are often confusing. The standard deviation (often refer as s, SD or Stddev) is a widely used measure of variability or dispersion. When […]
Font in R plot
Many high level plotting functions (plot, hist, boxplot, etc.) allow you to include axis and text options (as well as other graphical paramters). three key parameters: font eg font.main=20, font.lab=20 […]
Statistics in perl
Perl is one of script languages I confidently use it daily. I love it, even addict to it. I use it for data manipulation, basic statistic. There are a number […]
