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statistic

A statistic is a numerical piece of information. If you are trying to prove a point, and you want your argument to have a sense of authority, you might want to use a statistic to back up your claim.

A statistic is a single piece of information represented by a number. “Water makes up 70% of the Earth’s surface,” for instance, is a statistic. A statistic is like a fact that is reached through a mathematical process. A population figure is the most common statistic you will encounter. When made plural, statistics means either a collection of statistics or the science of creating and interpreting statistics, as in “His favorite course in college was Statistics.”

DEFINITIONS OF: statistic

n a datum that can be represented numerically

Types:: show 21 types...; hide 21 types...; average, norm
a statistic describing the location of a distribution; demographic
a statistic characterizing human populations (or segments of human populations broken down by age or sex or income etc.); deviation
the difference between an observed value and the expected value of a variable or function; moment
the n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value; distribution free statistic, nonparametric statistic
a statistic computed without knowledge of the form or the parameters of the distribution from which observations are drawn; parametric statistic
any statistic computed by procedures that assume the data were drawn from a particular distribution; time series
a series of values of a variable at successive times; vital statistics
data relating to births and deaths and health and diseases and marriages; age norm
the average age at which particular performances are expected to appear; outlier
an extreme deviation from the mean; mean deviation, mean deviation from the mean
the arithmetic mean of the absolute values of deviations from the mean of a distribution; modal value, mode
the most frequent value of a random variable; median, median value
the value below which 50% of the cases fall; mean, mean value
an average of n numbers computed by adding some function of the numbers and dividing by some function of n; second moment
the expected value of the square of the deviations of a random variable from the point of origin; variance
the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value; regression coefficient
when the regression line is linear (y = ax + b) the regression coefficient is the constant (a) that represents the rate of change of one variable (y) as a function of changes in the other (x); it is the slope of the regression line; coefficient of correlation, correlation, correlation coefficient
a statistic representing how closely two variables co-vary; it can vary from -1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation); rank-difference correlation, rank-difference correlation coefficient, rank-order correlation, rank-order correlation coefficient
the most commonly used method of computing a correlation coefficient between the ranks of scores on two variables; Kendall test
any of several nonparametric measures of correlation (used when the assumptions of standard correlational analysis are not met); fourfold point correlation, phi coefficient, phi correlation
an index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., male-female)

Type of:: data point, datum
an item of factual information derived from measurement or research

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