Summary of Formulae for One Sample Hypothesis Tests
Use the tool that you are most comfortable using. Formulae below use the following symbols: α = alpha = 1 – Confidence Level, σ = population standard deviation, s =...
Category: Statistics
Topics covered in Statistics include collecting samples, testing hypotheses, calculating various measures, analyzing data, and topics from Probability. There may be overlap with some other categories.
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Summary of Formulae for Confidence Intervals
Use the tool that you are most comfortable using. Formulae below use the following symbols: α = alpha = 1 – Confidence Level, σ = population standard deviation, s =...
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Summary of Central Limit Specials
Means/Averages Standard Error of Means: the standard deviation for the Averages Distribution: Sums Standard Error of Sums: the standard deviation for the Sums Distribution: is one sum Mean of Where...
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Summary of Continuous Distributions
Uniform a = lowest/minimum value b = highest/maximum value X ~ U(a,b) Exponential decay parameter: average time: X time ≥ 0 X ~ Exp(m) probability formula: Normal (calculations covered elsewhere, link...
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Summary of Discrete Distributions
Binomial n = number of trials p = probability of success q = probability of failure X ~ B(n,p) μ = np Geometric n = number of trials p =...
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Creating a Histogram using Excel’s Data Analysis ToolPak
If you don’t have the Data Analysis ToolPak installed, please install it. The following video shows how to install the ToolPak and use it to collect the Summary/Descriptive Statistics used...
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Creating a random DataSet from a Set of Values
We will use Excel to create a Random DataSet from a list of values. The formula used is: =INDEX($B:$B,RANDBETWEEN(2,COUNTA($B:$B)),1) B is the excel column that holds our data. We use...
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Some Statistical Definitions
When determining what is to be studied, it is important to know what the population to be studied is. Is it going to be all cats, all long haired cats,...