Statistics MCQs, Data Analysis, Stat Software
Introduction to statistics
A frequency table is a way of summarizing a set of data. It is a record of each value (or set of values) of the variable in the data/question. In this post, we will learn about the ways of Constructing Frequency Tables for discrete and continuous data. A grouping of …
The post is about “The Word Statistics Meaning and Use”. The word statistics was first used by German scholar Gottfried Achenwall in the middle of the 18th century as the science of statecraft concerning the collection and use of data by the state. The word statistics comes from the Latin …
Lack of Symmetry Skewness is the lack of symmetry (lack of normality) in a probability distribution. The skewness is usually quantified by the index as given below $$s = \frac{\mu_3}{\mu_2^{3/2}}$$ where $\mu_2$ and $\mu_3$ are the second and third moments about the mean. This index formula described above takes the …