When you wanted to import the text file in R, you must have used read.table() function. But do you know that you can pass on more than 20 different arguments to read.table() function? You must have used lm() function to come up with linear regression equation, but do you know that you can pass on …
Need HELP in R? A sneak peak into R’s Help ecosystem. Read More »
When the new data is presented to you for the analysis, you would like to get first hand information on the data set before diving deep into analysis. This is similar to doing a warm up exercises before engaging your body into high intensity workout. In this tutorial we will look at six different ways …
Learn 6 easy functions from base R to spot check your data set Read More »
When I speak to beginner data analysts, I could hear few miss-beliefs about data mining tools. I am writing this article to debunk some data mining fallacies. Here are the list of six Data Mining fallacies that I want to clarify: Fallacy 1: Data Mining tools are automated tools that can be deployed on the …
In my last article we learned how to estimate population mean by using sample mean when population standard deviation is known. In most instances, the population standard deviation will be unknown and thus business analyst won’t able to estimate the population mean. When the population standard deviation is unknown, the sample standard deviation must be …
What is t-distribution? – An intuitive understanding using business example Read More »
What is point estimation and what is its fundamental drawback? The use of single sample value such as X_bar (sample mean value) to estimate the population value is known as point estimation, because single value X_bar represent one point on the real number line. For e.g. if we are trying to calculate mean height of …
What is the difference between Point estimation and interval estimation? Read More »
