How to find the sample variance and standard deviation in easy steps. Includes videos for calculating sample variance by hand and in Excel.

## Chebyshev’s Theorem / Inequality: Calculate it by Hand / Excel

Contents (Click to skip to that section): What is Chebyshev’s Theorem? How to calculate Chebyshev’s Theorem by hand. How to calculate Chebyshev’s in Excel. Where did the Theorem come from? Chebyshev’s Inequality Applications for the Inequality Related Definitions Chebyshev’s sum…

## Linear Regression: Simple Steps and Video — Find the Equation, Coefficient and Slope

Contents: What is Simple Linear Regression? How to Find a Linear Regression Equation: How to Find a Linear Regression Equation by Hand. Find a Linear Regression Equation in Excel. TI83 Linear Regression. TI 89 Linear Regression Finding related items: How…

## Find a Five-Number Summary in Statistics: Easy Steps

Probability and Statistics > Basic Statistics > How to find a five-number summary in statistics Contents: Find a Five-Number Summary by Hand TI 89 Instructions SPSS Instructions 5 number summary in Excel (new window) How to find a five-number summary…

## Mean, Median, Mode: What They Are, How to Find Them

Contents (Click to skip to that section): All about the… Mean Find the mean in easy steps (video) Find the Mean on the TI 89 Graphing CalculatorFind the mean on the TI-89 Mode Median How to find the mean, median…

## Box Plot (Box and Whiskers): How to Read One & How to Make One in Excel, TI-83, SPSS

Contents (Click to skip to that section): What is a Boxplot? How to Read a Box Plot How to Make a Box Plot: Excel TI-83 TI-89 SPSS Minitab What is a Boxplot? A boxplot, also called a box and whisker…

## Correlation Coefficient: Simple Definition, Formula, Easy Steps

Correlation coefficients are used in statistics to measure how strong a relationship is between two variables. There are several types of correlation coefficient: Pearson’s correlation (also called Pearson’s R) is a correlation coefficient commonly used in linear regression. If you’re…

## Sample Size in Statistics (How to Find it): Excel, Cochran’s Formula, General Tips

Contents: What is a Sample Size? How to Find a Sample size: Part One: General Tips. Cochran’s Sample Size Formula Known Confidence Interval and Width (unknown population standard deviation). Known Confidence Interval and Width (known population standard deviation). Use Excel…

## Chi-Square Statistic: How to Calculate It / Distribution

Contents Click to skip to a section Definitions What is a Chi Square Test? What is a Chi-Square Statistic? Chi Square P-Values. The Chi-Square Distribution & Chi Distribution Calculations: How to Calculate a Chi-Square Statistic: By Hand (with video) SPSS…

## Interquartile Range (IQR): What it is and How to Find it

What is an Interquartile Range? The interquartile range is a measure of where the “middle fifty” is in a data set. Where a range is a measure of where the beginning and end are in a set, an interquartile range…