Week 4: Statistics and the Stories We Tell OurselvesSeptember 23, 2019
The practice or science of collecting and analysing numerical data in large quantities, especially for the purpose of inferring proportions in a whole from those in a representative sample.Source
A mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.Source
describes the likelihood for k successes over n trials with p probability of success where:
[1, 1, 1, 1, 6, 2, 4, 2, 9]
Variance, Standard Deviation
How to describe the relationship between two distributions?
Law of Large Numbers
The average of the results obtained from a large number of trials should be close to the expected value, and will tend to become closer as more trials are performed.
Central Limit Theorem
When independent random variables are added, their properly normalized sum tends toward a normal distribution (informally a "bell curve") even if the original variables themselves are not normally distributed.
where m is the sample maximum and k is the sample size
Reference: Data Science from Scratch
DataCamp's Statistical Thinking in Python (Part 2)