Standard Score (cont…)

Z-scores are expressed in terms of standard deviations from their means. Resultantly, these z-scores have a distribution with a mean of 0 and a...

What is the variance

The variance is one of the measures of dispersion which is a measure of how much the values in the data set may differ...

What Does PEMDAS Mean?

PEMDAS is an acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction. Given at least two operations in an equation, the order of...

Binomial Theorem

EXPLORING THIS TOPO IN THE MathWorld classroom We have several closely related results that are variously known as the binomial theorem according to the...

Box plot

In descriptive statistics, a box plot or boxplot is a method for graphically depicting groups of numerical data through their quartiles. Box plots may...

Critical Values of the Chi-Square Distribution

This table contains the basic estimations of the chi-square circulation. On account of the absence of balance of the chi-square appropriation, separate tables are...

Permutation

A permutation, also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list S into a one-to-one correspondence...