Confidence Intervals Introduction
Series of Posts This post is the first part of a series of posts called Statistics Confidence Intervals […]
Series: Statistics Confidence Intervals
CI Population Variance Known
Suppose we have a sample of salaries for a job title and we know the population’s variance. In […]
Student’s T Distribution
The Student’s T-distribution is one of the most important breakthroughs in statistics, as it allowed inference through small […]
CI Formulas
There are two formulas we use when we are computing the confidence interval. One is used when we […]
Margin of Error
In this post, we’ll introduce a new statistics term called the margin of error. Since a sample is […]
CI for Two Populations
What if we had two populations to consider? So far we’ve been looking at single populations. In some […]
CI Independent Samples
Let’s work with confidence intervals with two means and independent samples. Let’s work with data where we know […]
CI Population Unknown and Equal
The previous series of posts was called Inferential Statistics. Let’s now compare “apples to apples”. Last time we […]
CI for Predicting Sales
We are finding that we have too many products on our shelves and some of the products aren’t […]