Uploaded March 2026 | Updated September 2026, 33 minutes ago
Probability theory helps us understand chance. It shows how likely something is to happen, from events that are impossible to events that are certain. For example, it can help explain the chance of flipping heads on a coin, rolling a six on a die, or getting rain tomorrow. It is used to make predictions, study risk, and understand uncertainty in everyday life.
► E-BOOK
numiqo.com/statistics-book
Probability theory helps us understand chance. It shows how likely something is to happen, from events that are impossible to events that are certain. For example, it can help explain the chance of flipping heads on a coin, rolling a six on a die, or getting rain tomorrow. It is used to make predictions, study risk, and understand uncertainty in everyday life.
► E-BOOK
numiqo.com/statistics-book
![Point-biserial Correlation [Simply explained]](https://i.ytimg.com/vi/-nmPEsYzaWo/mqdefault.jpg "Point-biserial Correlation [Simply explained]
The point biserial correlation is a special case of the Pearson correlation and examines the relationship between a dichotomous variable and a metric variable.
► Online calculator Point-Biserial Correlation
https://numiqo.com/statistics-calculator/correlation/point-biserial-correlation-calculator
► Sample data
https://numiqo.com/statistics-calculator/correlation/point-biserial-correlation-calculator?example=point-biserial-correlation
► Tutorial Point-Biserial Correlation
https://numiqo.com/tutorial/point-biserial-correlation
► E-BOOK
https://numiqo.com/statistics-book
00:00 What is a point biserial correlation?
00:17 Dichotomous and metric variable.
00:53 Calculating point biserial correlation
01:55 Point biserial correlation equation
02:15 Point biserial correlation vs. Pearson correlation
03:06 Point biserial correlation coefficient
03:58 Hypotheses
04:32 Point biserial correlation vs. independent sample t-test
05:41 Point biserial correlation assumptions")
