Abstract: In this chapter, we introduce the concept of a random variable and develop the procedures for characterizing random variables, including the cumulative distribution function, as well as the ...

A discrete random variable is a type of random variable that can only take on a countable number of distinct values. A discrete random variable is a variable whose possible values are distinct and ...

Abstract: Nowadays Statistics and Probability, as one of the most applied and essential sciences, has become strongly dependent on computers. The chi-square distribution is most important distribution ...

I read this really interesting paper over the break, where they had multiple analyst teams analyze the same data set and fit a model to answer the same question. This is a topic we’ve thought about a ...

Forecasting for any small business involves guesswork. You know your business and its past performance, but you may not be comfortable predicting the future. Using Excel is a great way to perform what ...

{% file src="../.gitbook/assets/chapter-04-1-kor.pdf" caption="Chapter 4-1 (Korean)" %} {% file src="../.gitbook/assets/chapter-04-2-kor.pdf" caption="Chapter 4-2 ...

Department of Statistics, College of Science, Persian Gulf University, Bushehr, Iran. The failure time which is denoted by , , is the time that failure occurs for each individual. It’s not always ...