Statistics Topics
- Arithmetic Mean
- The arithmetic mean of n numbers is the sum of the numbers divided by n.
- Autocovariance
- This is the degree to which a function is correlated with itself as a function of time.
- Average Deviation
- The absolute value of the difference from the mean for each data value, summed, then divided by the number of values.
- Continuous Data
- The values belonging to it may take on any value within a finite or infinite interval.
- Covariance
- A measure of the joint variability of a pair of numeric variables.
- Data
- A series of facts or statements that may have been collected, stored, processed or manipulated but have not been organized.
- Data Mining
- Using automated data anlysis techniques to find themes or relationships.
- Data Processing
- The execution of a systematic sequence of operations performed upon data. Synonymous with information processing.
- Distribution
- A probability function which describes the relative frequency of occurrence of data values when sampled from a population.
- Frequency Distribution
- An organized display of a set of data that shows how often each different piece of data occurs.
- Gaussian Distribution
- A continuous probability distribution that often gives a good description of data that cluster around the mean.
- Geometric Mean
- A statistic calculated by multiplying n data values together and taking the n-th root of the result.
- Harmonic Mean
- The harmonic mean of two numbers a and b is 2ab/(a + b).
- Mean
- The sum of all values in the data, divided by the number of values.
- Mean Time to Failure
- The measured operating time of a system or component divided by the number of failures that occurred during that time.
- Mode
- The most frequently occurring value in a sequence of numbers.
- Multimodal Distribution
- A distribution with more than one mode.
- Normal Distribution
- A continuous probability distribution that often gives a good description of data that cluster around the mean. Also known as Gaussian Distributon or Bell Curve.
- Ordinal Data
- A set of data is said to be ordinal if the values belonging to it can be put in order or have a rating scale attached.
- Pareto Distribution
- A distribution used for random variables which are constrained to be greater or equal to 0.
- Rayleigh Distribution
- An example is the variation of wave height in a sea where swell is the main component.
- Relative Standard Deviation
- A measure of precision, calculated by dividing the standard deviation for a series of measurements by the average measurement.
- Standard Deviation
- Standard deviation is the square root of the variance.
- Standard Error
- The standard deviation divided by the square root of the number of data values.
- Standard Normal Distribution
- A normal distribution with a mean equal to 0 and a standard deviation equal to 1
- Statistic
- Anything that can be calculated from a sample of data.
- Statistical Model
- A statistical model is used to describe the relationship between a dependent variable Y and one or more independent variables.
- Statistics Books
- Lists all Statistics Books in the Encyclopaedia
- Statistics Calculations
- Lists all Statistics Calculations in the Encyclopaedia
- Statistics Conversions
- Lists all Statistics Conversions in the Encyclopaedia
- Statistics Weblinks
- Lists all Statistics Weblinks in the Encyclopaedia
- Student′s t Distribution
- A probability distribution which is very similar in shape to the standard normal distribution.
- Summary Statistics
- A single number representation of the characteristics of a set of data. Usually given by measures of central tendency and measures of dispersion.
- Variance
- The square of the difference from the mean for each data value, summed and divided by one less than the number of values.
- Weibull Distribution
- A distribution used for random variables which are constrained to be greater or equal to 0.
Subjects: Mathematics