# Inferential Statistics

## How to Calculate a z-score

Determining if something is probable in statistics can be tricky. I mean, how am I supposed to know if one measurement of a sample is particularly significant when compared to the entire sample or even the population? Well, luckily for us, statisticians of the highest caliber have calculated probabilities for us and we can calculate […]

## Hypothesis Testing for Newbies

Hypothesis testing is literally my favorite part of conducting statistical analyses. Hypothesis testing refers to the process of generating a clear and testable question, collecting and analyzing appropriate data, and drawing an inference that answers your question. Of course, this means that some steps come into play. What is a hypothesis in the first place? […]

## How do You Calculate a Confidence Interval?

Have you ever used the phrase “give or take” as in, “I’ll be there at 6 o’clock give or take five minutes”? That common phrase means that an acceptable time to arrive would be between 5:55 and 6:05. In other words, we can be confident that the time you actually arrive will be within that […]