Because this keeps tripping me up, here are a few examples of how to use lambda functions to add/manipulate data…

# Recap of Which Test to Use, Depending on Your Samples

Numerical Categorical Sample vs. Known Quantity 1 Sample T-Test Binomial Test 2 Samples 2 Sample T-Test Chi Square More…

# A Nuance Between Surveys and A/B Tests

Suppose we are going to survey a group of high school students to see which of two exhibitions they’d like…

# Sample Size Determination – Surveys

Generally, sample size calculators use 4 parameters: margin of error — the furthest we expect the *true* value to be…

# Sample Size Determination – A/B Test

For A/B Tests: In order to determine the sample size necessary for an A/B test, a sample size calculator requires…

# Categorical Hypothesis Testing

If the data you have is not numerical so not ([1,5,7,9]), but instead categorical so ([True, True, False, False]) or…

# “Quick question”

An email I got recently (with the above title as its subject line): where do you think the most interesting…

# Performing Arts Ticket Buyer Study

Performing Arts Ticket Buyer — Media Usage Study Key Findings 1. Generational Differences Generational shifts are driving differences in a…

# Types of Numerical Hypothesis Tests

When you conduct a hypothesis test, you first want to create a null hypothesis, which is a prediction that there is…

# Statistical Concepts

Just got to a juicy section in the Codeacademy Data Analysis class I’m taking. This one’s all about basic statistical…