Are you looking for free statistics lesson including solved exercises? Here you go! Below a list of several statistics topics which are simply explained to solve practical exercises.

Statistics is in two main part:

- Descriptive Statistics
- Inferential Statistics

## Descriptive Statistics

It is all about the following topics:

- Frequency distributions
- graphs of frequency distributions
- position indexes (mean, fashion, median)
- dispersion indices (mean square deviation, variance, coefficient variation, etc.)
- quartiles and quantiles etc ...
- linear and non-linear regression
- covariance and correlation coefficient

## Inferential Statistics

And this one concerns

- Combinatorial calculation and definition of probability
- discrete, continuous and mixed random variables
- probability mass, density function (pdf) and cumulative distribution function (cdf)
- Significant probability distributions (Binomial, Uniform, Normal, Poisson)
- Estimation of parameters (point estimators and confidence intervals)
- Hypothesis test
- Transformation of random variables