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A mathematical function of a set of measurements, typically used to summarize a data set or to estimate unknown parameters. The mean, the standard deviation, the correlation coefficient, and the slope of a regression line are examples of statistics.
when an index such as the median is used to describe a characteristic of a sample (Shavelson, 1996).
A random variable that is a function of data.
A summary number typically used to describe a characteristic of a sample and from which inferences about the population represented by the sample are made.
a characteristic of a sample. A statistic is an estimate of a population parameter. For larger samples, the statistic is a better estimate of the parameter.
A computed quantity characteristic of a population, such as the mean.
a function of the sample measurements; e.g., the sample mean or standard deviation.
Any numerical summary measure based on data from a sample; contrasts with a parameter which is based on data from a population (Fortune, 1999)
a characteristic of more than one (not all) thing
a function of an observable random sample
a function of one or more random variables that does not depend upon any unknown parameter
a function of the observations in a sample designed to estimate a parameter of the population from which the sample was drawn, or to carry out a test of significance of a hypothesis
a generalization concerning an entire sample, such as the mean, mode or median
a number computed from a sample
a number used to describe some characteristic, such as the central tendency or variability of a set of scores
a numerical description of a sample
a quantity whose value depends only on the observations, the sample size and any known parameters
a summary index of a variable from a sample of population of data
a value based on an actual sample we obtain, e
a weighted average, it has a smaller standard deviation than a single control measurement, and, therefore, the EWMA control limits are narrower than the limits for a Shewhart control chart
An attribute of a sample.
Anything that can be computed entirely from the properties of a sample of data. The term is most often used for population parameters such as the sample mean and sample standard deviation, although minimum and vaximum values and histograms are also statistics.
Measure of a sample characteristic.
A function of a random sample of data (e.g. mean, standard deviation, distribution parameters).
The number that results from manipulating raw data according to a specified procedure; associated with samples. see also: Parameter
A statistic is a quantity that is calculated from a sample of data. It is used to give information about unknown values in the corresponding population. It is possible to take more than one sample from the same population and the value of a statistic will in general vary from sample to sample.
A quantitative characteristic of the sample
any of several characteristics of a sample.
A measurement of a Variable of interest which is subject to random variation.