HyperDic: statistics

English > 1 sense of the word statistics:
NOUNcognitionstatisticsa branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
statistics > pronunciation
Rhymesacoustics ... UNIX: 110 rhymes with ihks...
English > statistics: 1 sense > noun 1, cognition
MeaningA branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters.
Category ofBayes' postulate(statistics) the difficulty of applying Bayes' theorem is that the probabilities of the different causes are seldom known, in which case it may be postulated that they are all equal (sometimes known as postulating the equidistribution of ignorance)
Bayes' theorem(statistics) a theorem describing how the conditional probability of a set of possible causes for a given observed event can be computed from knowledge of the probability of each cause and the conditional probability of the outcome of each cause
Bernoulli's law, law of large numbers(statistics) law stating that a large number of items taken at random from a population will (on the average) have the population statistics
Kendall partial rank correlationA nonparametric measure of partial correlation
Kendall testAny of several nonparametric measures of correlation (used when the assumptions of standard correlational analysis are not met)
Poisson distributionA theoretical distribution that is a good approximation to the binomial distribution when the probability is small and the number of trials is large
analysis of variance, ANOVAA statistical method for making simultaneous comparisons between two or more means
arithmetic mean, first moment, expectation, expected valueThe sum of the values of a random variable divided by the number of values
average, normA statistic describing the location of a distribution
average, meanApproximating the statistical norm or average or expected value
bimodalOf a distribution
binomial distribution, Bernoulli distributionA theoretical distribution of the number of successes in a finite set of independent trials with a constant probability of success
binomial theoremA theorem giving the expansion of a binomial raised to a given power
biserial correlation coefficient, biserial correlationA correlation coefficient in which one variable is many-valued and the other is dichotomous
co-varyVary in the same time period (of two random variables)
coefficient of concordanceA coefficient of agreement (concordance) between different sets of rank orderings of the same set of things
correlation coefficient, coefficient of correlation, correlationA statistic representing how closely two variables co-vary
correlation matrixA matrix giving the correlations between all pairs of data sets
correlation tableA two-way tabulation of the relations between correlates
correlational analysisThe use of statistical correlation to evaluate the strength of the relations between variables
covariance(statistics) the mean value of the product of the deviations of two variates from their respective means
covariation(statistics) correlated variation
cross sectionA sample meant / meant to be representative of a whole population
curvilinear correlation, nonlinear correlation, skew correlationAny correlation in which the rates of change of the variables is not constant
curvilinear regressionThe relation between variables when the regression equation is nonlinear (quadratic / quadratic or higher order)
decile(statistics) any of nine points that divided a distribution of ranked scores into equal intervals where each interval contains one-tenth of the scores
degree of freedom(statistics) an unrestricted variable in a frequency distribution
demographicA statistic characterizing human populations (or segments of human populations broken down by age or sex or income etc.)
dependent variable(statistics) a variable in a logical or mathematical expression whose value depends on the independent variable
deviationThe difference between an observed value and the expected value of a variable or function
distribution, statistical distribution(statistics) an arrangement of values of a variable showing their observed or theoretical frequency of occurrence
ergodicpositive recurrent aperiodic state of stochastic systems
factor analysisAny of several methods for reducing correlational data to a smaller number of dimensions or factors
first-order correlationA partial correlation in which the effects of only one variable are removed (held constant)
frequency distributionA distribution of observed frequencies of occurrence of the values of a variable
geometric meanThe mean of n numbers expressed as the n-th root of their product
grab sampleA single sample or measurement taken at a specific time or over as short a period as feasible
harmonic meanThe mean of n numbers expressed as the reciprocal of the arithmetic mean of the reciprocals of the numbers
independent variable, experimental variable(statistics) a variable whose values are independent of changes in the values of other variables
information theory(computer science) a statistical theory dealing with the limits and efficiency of information processing
least squares, method of least squaresA method of fitting a curve to data points so as to minimize the sum of the squares of the distances of the points from the curve
linear regression, rectilinear regressionThe relation between variables when the regression equation is linear
mean, mean valueAn average of n numbers computed by adding some function of the numbers and dividing by some function of n
mean deviation, mean deviation from the meanThe arithmetic mean of the absolute values of deviations from the mean of a distribution
median, median valueThe value below which 50% of the cases fall
median, averagerelating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values)
modal, averagerelating to or constituting the most frequent value in a distribution
mode, modal valueThe most frequent value of a random variable
momentThe n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value
multicollinearityA case of multiple regression in which the predictor variables are themselves highly correlated
multiple correlation coefficientAn estimate of the combined influence of two or more variables on the observed (dependent) variable
multiple regression, multiple correlationA statistical technique that predicts values of one variable on the basis of two or more other variables
multivariatepertaining to any procedure involving two or more variables
multivariate analysisA generic term for any statistical technique used to analyze data from more than one variable
negative correlation, indirect correlationA correlation in which large values of one variable are associated with small values of the other
nonparametricnot involving an estimation of the parameters of a statistic
nonparametric statistic, distribution free statisticA statistic computed without knowledge of the form or the parameters of the distribution from which observations are drawn
nonsignificantattributable to chance
normal curve, bell-shaped curve, Gaussian curve, Gaussian shapeA symmetrical curve representing the normal distribution
normal distribution, Gaussian distributionA theoretical distribution with finite mean and variance
outlierAn extreme / extreme deviation from the mean
parametric statisticAny statistic computed by procedures that assume the data were drawn from a particular distribution
partial correlationA correlation between two variables when the effects of one or more related variables are removed
percentile, centile(statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total
phi coefficient, phi correlation, fourfold point correlationAn index of the relation between any two sets of scores that can both be represented on ordered binary dimensions (e.g., male-female)
population, universe(statistics) the entire aggregation of items from which samples can be drawn
positive correlation, direct correlationA correlation in which large values of one variable are associated with large values of the other and small with small
predictor variableA variable that can be used to predict the value of another variable (as in statistical regression)
probability theory, theory of probabilityThe branch of applied mathematics that deals with probabilities
product-moment correlation coefficient, Pearson product-moment correlation coefficientThe most commonly used method of computing a correlation coefficient between variables that are linearly related
quartile(statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores
random sampleA sample grabbed at random
random sampleA sample in which every element in the population has an equal chance of being selected
rank-order correlation coefficient, rank-order correlation, rank-difference correlation coefficient, rank-difference correlationThe most commonly used method of computing a correlation coefficient between the ranks of scores on two variables
regression, simple regression, regression toward the mean, statistical regressionThe relation between selected values of x and observed values of y (from which the most probable value of y can be predicted for any value of x)
regression analysisThe use of regression to make quantitative predictions of one variable from the values of another
regression coefficientWhen 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)
regression equation, regression of y on xThe equation representing the relation between selected values of one variable (x) and observed values of the other (y)
regression line, regression curveA smooth curve fitted to the set of paired data in regression analysis
sample distribution, sample, samplingitems selected at random from a population and used to test hypotheses about the population
sampling(statistics) the selection of a suitable sample for study / study
second momentThe expected value of the square of the deviations of a random variable from the point of origin
significantToo closely correlated to be attributed to chance and therefore / therefore indicating a systematic relation
split-half correlation, chance-half correlationA correlation coefficient calculated between scores on two halves of a test
spurious correlationA correlation between two variables (e.g., between the number of electric motors in the home and grades at school) that does not result from any direct relation between them (buying electric motors will not raise grades) but from their relation to other variables
standard deviationThe square root of the variance
statisticA datum that can be represented numerically
statistical method, statistical procedureA method of analyzing or representing statistical data
statistician, actuarysomeone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums)
stochasticBeing or having a random variable
stratified sample, representative sample, proportional sampleThe population is divided into strata and a random sample is taken from each stratum
subnormalBelow normal or average
subpopulationA population that is part of a larger / larger population
supernormalExceeding the normal or average
tau coefficient of correlation, Kendall's tau, Kendall rank correlationA nonparametric measure of the agreement between two rankings
tetrachoric correlation coefficient, tetrachoric correlationA correlation coefficient computed for two normally distributed variables that are both expressed as a dichotomy
time seriesA series of values of a variable at successive times
unimodalHaving a single mode
varianceThe second moment around the mean
vital statisticsdata relating to births and deaths and health and diseases and marriages
weight, weighting(statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance
Partsstatistical method, statistical procedureA method of analyzing or representing statistical data
Narrowerbiometrics, biometry, biostatisticsA branch of biology that studies biological phenomena and observations by means of statistical analysis
correlation, correlational statisticsA statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
nonparametric statisticsThe branch of statistics dealing with variables without making assumptions about the form or the parameters of their distribution
Broaderapplied mathematics, applied mathThe branches of mathematics that are involved in the study of the physical or biological or sociological world
Spanishestadística, estadísticas
Catalanestadística, estadístic
Adjectivesstatisticalof or relating to statistics
Nounsstatisticiansomeone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums)
statisticiana mathematician who specializes in statistics

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