Student's deviation

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• Student's t-distribution — Student s distribution or Student s t distribution, Statistics. a distribution used to estimate the standard deviation of a population on the basis of the standard deviation of a small sample; t distribution. As the size of the sample increases,… …   Useful english dictionary

• Student's distribution — or Student s t distribution, Statistics. a distribution used to estimate the standard deviation of a population on the basis of the standard deviation of a small sample; t distribution. As the size of the sample increases, the distribution… …   Useful english dictionary

• Student's t-test — A t test is any statistical hypothesis test in which the test statistic follows a Student s t distribution if the null hypothesis is supported. It is most commonly applied when the test statistic would follow a normal distribution if the value of …   Wikipedia

• Student's t-distribution — Probability distribution name =Student s t type =density pdf cdf parameters = u > 0 degrees of freedom (real) support =x in ( infty; +infty)! pdf =frac{Gamma(frac{ u+1}{2})} {sqrt{ upi},Gamma(frac{ u}{2})} left(1+frac{x^2}{ u} ight)^{ (frac{… …   Wikipedia

• Student's t-test — /tee test /, Statistics. a test for determining whether or not an observed sample mean differs significantly from a hypothetical normal population mean. [1945 50; see STUDENT S T DISTRIBUTION] * * * ▪ statistics       in statistics, a method of… …   Universalium

• Student's t distribution — noun A distribution that arises when the population standard deviation is unknown and has to be estimated from the data. Syn: Students t, t distribution See Also: Students t test …   Wiktionary

• Absolute deviation — In statistics, the absolute deviation of an element of a data set is the absolute difference between that element and a given point. Typically the point from which the deviation is measured is a measure of central tendency, most often the median… …   Wikipedia

• Median absolute deviation — In statistics, the median absolute deviation (MAD) is a robust measure of the variability of a univariate sample of quantitative data. It can also refer to the population parameter that is estimated by the MAD calculated from a sample. For a… …   Wikipedia

• Colorado Student Assessment Program — For the school board in Nova Scotia, see Conseil Scolaire Acadien Provincial The Colorado Student Assessment Program (CSAP) is an assessment required by the No Child Left Behind Act administered by the Unit of Student Assessment in the Colorado… …   Wikipedia

• Test (student assessment) — A test or an examination (or exam ) is an assessment, often administered on paper or on the computer, intended to measure the test takers or respondents (often a student) knowledge, skills, aptitudes, or classification in many other topics (e.g …   Wikipedia

• Normal distribution — This article is about the univariate normal distribution. For normally distributed vectors, see Multivariate normal distribution. Probability density function The red line is the standard normal distribution Cumulative distribution function …   Wikipedia