September 7, 2020
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### Correlation: Introduction to Relationships

In the last lesson, you learned about the Two-way Chi-square Test for Independence. Using it, you can determine if two categorical variables are independent. If

September 6, 2020
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### Correlation and Chi-square Tests for Independence

The word “correlate” has several meanings, e.g. “If two or more facts, numbers, etc. correlate or are correlated, there is a relationship between them” (Cambridge

December 1, 2019
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### Empirical Rule and z-score Probability

Empirical Rule The Empirical Rule applies to a normal, bell-shaped curve than is symmetrical about the mean. It states that within one standard deviation of the

September 29, 2019
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Proportions

### Two-sample Difference Between Proportions Z-test

Problem https://youtu.be/_SvoDf7Toi4 https://youtu.be/XWLsrGtLfAo

August 12, 2019
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