Book Image

Mastering SciPy

By : Francisco Javier Blanco-Silva, Francisco Javier B Silva
Book Image

Mastering SciPy

By: Francisco Javier Blanco-Silva, Francisco Javier B Silva

Overview of this book

Table of Contents (16 chapters)
Mastering SciPy
About the Author
About the Reviewers

Statistical inference

Statistical inference is the process of deducing properties of an underlying distribution by analysis of data. Inferential statistical analysis infers properties about a population; this includes testing hypotheses and deriving estimates.

There are three types of inference:

  • Estimation of the most appropriate single value of a parameter.

  • Interval estimation to assess what region of parameter values is most consistent with the given data.

  • Hypothesis testing to decide, between two options, what parameter values are most consistent with the data.

There are mainly three approaches to attack these problems:

  • Frequentist: Inference is judged based upon performance in repeated sampling.

  • Bayesian: Inference must be subjective. A prior distribution is chosen for the parameter we seek, and we combine the density of the data prior to obtain a joint distribution. A further application of Bayes Theorem gives us a distribution of the parameter, given the data. To perform computations...