Preface to Essay Letter Writing Essay or letter writing are the two different types of creative writing in any language. While an essay is a piece of writing which is written from an author’s perspective, a letter is a written message for …

Preface to Managerial Economics If you’ve been wondering about the techniques that are implemented to resolve practical economic problems, it is called Managerial Economics. The term, Managerial Economics is the application of various econ…

Preface to R Programming R is a programming language and a free software environment. This software is used for statistical computing and graphics which comes in handy for most companies. It is also utilized by various miners and statistic…