Statistics
This category includes articles about statistics. Statistical methods are important to know about in order to be able to analyze financial markets and financial instruments.
Qualitative variables are variables that assume non-numeric values. Examples of qualitative variables can be gender, race, eye color and model of car. ...
Quantitative variables are variables that can assume numeric values. Examples of quantitative variables are age, revenue, speed, and number of inhabitants. ...
Quartiles is a method to describe the spread in a distribution. Quartiles divide the distribution into four equal parts. ...
Random variables are measurements that results from an experiment which takes values depending on chance. In all experiments in which probabilities are involved, the outcomes occur randomly. ...
Ratio data is the highest level of data. Ratio data can be ranked, it is possible to measure the differences between two values and it is meaningful to calculate the ratio between two values of rati ...
A relative frequency distribution is a frequency distribution in which the proportions of each class also are indicated. ...
Spread concerns how values differ from the central value in a data set. The spread is measured in data, since measurements of scattering gives important information about how the data is distributed ...
Standard deviation is a measure of variability based on deviations from the mean. Standard deviation is calculated from the variance. ...
A sample is a representative subset of a whole population. A sample is taken from a population for statistical studies. ...
Statistics is a science about data collection, data organization, data presentation, data analysis and data interpretation to provide a basis for effective decisions. ...