Statistics

The normal distribution, a very common probability density, useful because of the central limit theorem.
Scatter plots are used in descriptive statistics to show the observed relationships between different variables, here using the Iris flower data set.
Gerolamo Cardano, a pioneer on the mathematics of probability.
Karl Pearson, a founder of mathematical statistics.
A least squares fit: in red the points to be fitted, in blue the fitted line.
Confidence intervals: the red line is true value for the mean in this example, the blue lines are random confidence intervals for 100 realizations.
In this graph the black line is probability distribution for the test statistic, the critical region is the set of values to the right of the observed data point (observed value of the test statistic) and the p-value is represented by the green area.
The confounding variable problem: X and Y may be correlated, not because there is causal relationship between them, but because both depend on a third variable Z. Z is called a confounding factor.
gretl, an example of an open source statistical package

Discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

- Statistics
The normal distribution, a very common probability density, useful because of the central limit theorem.

111 related topics

Alpha

Biometrika

Peer-reviewed scientific journal published by Oxford University Press for the Biometrika Trust.

Peer-reviewed scientific journal published by Oxford University Press for the Biometrika Trust.

The principal focus of this journal is theoretical statistics.

The experiment asked whether a taster could tell if the milk was added before the brewed tea, when preparing a cup of tea.

Lady tasting tea

The experiment asked whether a taster could tell if the milk was added before the brewed tea, when preparing a cup of tea.
Ronald Fisher in 1913

In the design of experiments in statistics, the lady tasting tea is a randomized experiment devised by Ronald Fisher and reported in his book The Design of Experiments (1935).

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Variance

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In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its population mean or sample mean.

Ronald Fisher

Statistical Methods for Research Workers

Ronald Fisher

Statistical Methods for Research Workers is a classic book on statistics, written by the statistician R. A. Fisher.

A stained-glass window in the dining hall of Gonville and Caius College, Cambridge commemorated Ronald Fisher and represented a 7 × 7 Latin square. The Sir Ronald Fisher window was removed in 2020 because of Fisher's connection with eugenics.

The Design of Experiments

A stained-glass window in the dining hall of Gonville and Caius College, Cambridge commemorated Ronald Fisher and represented a 7 × 7 Latin square. The Sir Ronald Fisher window was removed in 2020 because of Fisher's connection with eugenics.

The Design of Experiments is a 1935 book by the English statistician Ronald Fisher about the design of experiments and is considered a foundational work in experimental design.

The normal distribution, a very common probability density, useful because of the central limit theorem.

Sufficient statistic

The normal distribution, a very common probability density, useful because of the central limit theorem.

In statistics, a statistic is sufficient with respect to a statistical model and its associated unknown parameter if "no other statistic that can be calculated from the same sample provides any additional information as to the value of the parameter".

Visualisation for one-versus-all LDA axes for 4 classes in 3d

Linear discriminant analysis

Visualisation for one-versus-all LDA axes for 4 classes in 3d
Projections along linear discriminant axes for 4 classes

Linear discriminant analysis (LDA), normal discriminant analysis (NDA), or discriminant function analysis is a generalization of Fisher's linear discriminant, a method used in statistics and other fields, to find a linear combination of features that characterizes or separates two or more classes of objects or events.

Ronald Fisher in 1912

The Correlation between Relatives on the Supposition of Mendelian Inheritance

Scientific paper by Ronald Fisher which was published in the Transactions of the Royal Society of Edinburgh in 1918, .

Scientific paper by Ronald Fisher which was published in the Transactions of the Royal Society of Edinburgh in 1918, .

Ronald Fisher in 1912
Karl Pearson

The paper also contains the first use of the statistical term variance.

The normal distribution, a very common probability density, useful because of the central limit theorem.

Survey sampling

The normal distribution, a very common probability density, useful because of the central limit theorem.

In statistics, survey sampling describes the process of selecting a sample of elements from a target population to conduct a survey.

The normal distribution, a very common probability density, useful because of the central limit theorem.

Sampling distribution

The normal distribution, a very common probability density, useful because of the central limit theorem.

In statistics, a sampling distribution or finite-sample distribution is the probability distribution of a given random-sample-based statistic.