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     1  +2 2014 apr 25random number tableRandom Number Generator | Random Number Table - Stat TrekUse the Random Number Generator to create a list of random numbers, based on your specifications. Create a random number table of up to ... ‎What are random numbers? - ‎What is a random number generator?
     1  ~ 2014 apr 05linear regression t testRegression Slope Test - Stat TrekTest method. Use a linear regression t-test (described in the next section) to determine whether the slope of the regression line differs significantly from zero.
     2  +2 2014 jun 16poisson distributionPoisson Distribution - Stat TrekA Poisson distribution is the probability distribution that results from a Poisson ... The following notation is helpful, when we talk about the Poisson distribution .
     2  +4 2014 jun 13level of confidenceConfidence Level : Definition - Stat TrekDefinition of confidence level , from the Stat Trek dictionary of statistical terms and concepts. This statistics glossary includes definitions of all technical terms used ...
     2  +10 2014 jun 02linear regression slopeRegression Slope : Confidence Interval - Stat TrekThis lesson describes how to construct a confidence interval around the slope of a regression line. We focus on the equation for simple linear regression , which ...
     2  +5 2014 jun 01what is f probability levelF Distribution Calculator - Stat Trek? A probability is a number expressing the chances that a specific event will occur. This number can take on any value ...
     2  +3 2014 may 22statistic elementsElement : Definition - Stat TrekDefinition of element , from the Stat Trek dictionary of statistical terms and concepts. This statistics glossary includes definitions of all technical terms used on Stat  ...
     2  +1 2014 may 15telephone de biaisSurvey Bias - Stat TrekDescribes two sources of bias in survey sampling: unrepresentative samples and ... The survey relied on a convenience sample, drawn from telephone  ...
     2  ~ 2014 may 10leaderboard ad costAdvertising at StatTrek.comAll about advertising at StatTrek.com: Rates , demographics, types of ads , etc. ... Low cost . Banner ads , skyscraper ads , and text ads cost only pennies per day.
     2  +3 2014 apr 28t value calculatorT Distribution Calculator - Stat TrekT distribution calculator finds cumulative probability and t scores. Fast, easy ... text boxes. Click the Calculate button to compute a value for the blank text box. ‎Which random variable should I ... - ‎What are degrees of freedom?
     3  ~ 2014 jul 02goodness of fitChi-Square Goodness of Fit Test - Stat TrekThis lesson describes when and how to conduct a chi-square goodness of fit test. Key points are illustrated by a sample problem with solution.
     3  +1 2014 may 31rank of a matrixMatrix Rank - Stat TrekThis lesson defines matrix rank and shows how to find the rank of a matrix . Includes problems with solutions to illustrate key points.
     3  +8 2014 may 24standard errorStandard Error - Stat TrekThe standard error is an estimate of the standard deviation of a statistic. This lesson shows how to compute the standard error , based on sample data.
     3  ~ 2014 may 13errore standard b1 italianoLinear Regression - Stat TrekFor each value of X, the probability distribution of Y has the same standard deviation σ. .... The standard error about the regression line (often denoted by SE ) is a ...
     3  +10 2014 apr 24bayes theorem examplesBayes ' Theorem - Stat TrekBayes ' theorem (also known as Bayes' rule) is a useful tool for calculating ... This section presents an example that demonstrates how Bayes ' theorem can be ...
     3  +2 2014 apr 18number sequence generatorRandom Number Generator - Stat TrekUse the Random Number Generator to create a list of random numbers , ... numbers or repeats a particular sequence of random numbers .
     3  +9 2014 apr 09chi square test exampleChi - Square Test of Independence - Stat TrekThis lesson describes when and how to conduct a chi - square test of independence. Key points are illustrated by a sample problem with solution.
     3  ~ 2014 apr 08random number generator rangeUse the Random Number Generator to create a list of random ... Numbers were randomly selected from within the range of 0 to 99999.
     3  +6 2014 apr 04randomly generated numbersUse the Random Number Generator to create a list of random numbers , based on your specifications. The numbers you generate appear in the ...
     3  +5 2014 mar 29random sample sizeSample Size Calculation: Simple Random Sample - Stat TrekSample size calculation with simple random sampling. How to find smallest sample size that provides desired precision. Sample problem illustrates key points.
     4  ~ 2014 jul 02negative binomial distributionNegative Binomial Distribution - Stat TrekIn this lesson, we cover the negative binomial distribution and the geometric distribution. As we will see, the geometric distribution is a special case of the ...
     4  +9 2014 may 26confidence intervalConfidence Interval - Stat TrekThis lesson explains what a confidence interval is and explains how to construct and interpret confidence intervals . Includes sample problem with solution.
     4  +33 2014 may 21helpful internet statisticsUseful Statistics Resources - Stat TrekUseful Statistics Resources On the Web . Sadly, our visitors ...
     4  +49 2014 may 20the difference inDifference in Means - Stat TrekHow to construct a confidence interval for the difference between two sample means. Step-by-step instructions, including two sample problems with solutions.
     4  -1 2014 may 17defination one sample t testone - sample t - test : Definition - Stat TrekDefinition of one - sample t - test , from the Stat Trek dictionary of statistical terms and concepts. This statistics glossary includes definitions of all technical terms ...
     4  +26 2014 may 06margin of errorMargin of Error - Stat TrekIn a confidence interval, the range of values above and below the sample statistic is called the margin of error . For example, suppose we wanted to know the ...
     4  +2 2014 may 05unique number generatorRandom Number Generator creates random number tables. Up to 1000 ... Each family has been assigned a unique number from 1 to 20,000.
     4  +3 2014 apr 27free statistics helpStatistics , Probability, and Survey SamplingFree tutorials cover statistics , probability, and matrix algebra. ... This web site provides training and tools to help you solve statistics problems quickly, easily, and ...
     4  +6 2014 apr 23stratified random samplingStratified Random Sampling - Stat TrekDescribes stratified random sampling as sampling method. Covers proportionate and disproportionate sampling. Lists pros and cons versus simple random ...
     4  +1 2014 apr 06help with probability problemsProbability Calculator - Stat TrekThe probability of winning the 100-yard dash is 0.25, and
     4  +2 2014 mar 31statistics designs of experimentsExperimental Design - Stat TrekIntroduces experimental design – what it is and why it is useful in research. Describes three common ... Experimental design in statistics : Video lesson. The term ...
     4  +3 2014 mar 24what is an experimentExperiment - Stat TrekIn an experiment , a researcher manipulates one or more variables, while holding all other variables constant. By noting how the manipulated variables affect a  ...
     5  +4 2014 may 20random number pickerRandom Number Generator creates random number tables. Up to 1000 numbers per table. With or without duplicates. Each number within a ...
     5  +2 2014 may 18types of matricesMatrix Types - Stat TrekThis lesson defines various kinds of matrices : vector, row vector, column vector, square matrix, symmetric matrix, diagonal matrix, and scalar matrix.
     5  +7 2014 may 17hypothesis testingHypothesis Tests - Stat TrekThis assumption may or may not be true. Hypothesis testing refers to the formal procedures used by statisticians to accept or reject statistical hypotheses.
     5  +49 2014 may 12used graphing calculatorGraphing Calculators - Stat TrekRecommended graphing calculators for AP statistics and calculus. ... It also adds USB on-the-go technology (cable included) that can be used to share files with ...
     5  +2 2014 may 08how use matrixMatrix Algebra Tutorial - Stat TrekDetermine matrix rank (i.e., distinguish singular from non-singular matrices). Find the determinant and inverse for any square matrix. Use matrix algebra to solve ...
     5  +13 2014 may 01statistical power calculatorStatistical Power - Stat TrekHow to Find the Power of a Statistical Test ... We enter the following values into the calculator : value = 294.45; mean = 290; and standard deviation = 2.83.
     5  ~ 2014 apr 28sample mean symbolStatistics Notation - Stat TrekThis web page describes how symbols are used on the Stat Trek web site to represent ... μ refers to a population mean; and x, to a sample mean . σ refers to the ...
     5  ~ 2014 apr 25chi square distributionChi - Square Distribution - Stat TrekThe distribution of the chi-square statistic is called the chi - square distribution . In this lesson, we learn to compute the chi-square statistic and find the probability ...
     5  +6 2014 apr 24standard deviation definitionStandard Deviation : Definition - Stat TrekDefinition of standard deviation , from the Stat Trek dictionary of statistical terms and concepts. This statistics glossary includes definitions of all technical terms ...
     5  +1 2014 apr 09college statistics helpThis web site provides training and tools to help you solve statistics problems ... AP and Advanced Placement Program are registered trademarks of the College  ...
     5  +9 2014 apr 07margin for error
     5  +5 2014 apr 01statistics help probabilityStatistics , Probability , and Survey SamplingFree tutorials cover statistics , probability , and matrix algebra. ... This web site provides training and tools to help you solve statistics problems quickly, easily, and ...
     5  +6 2014 mar 24create random numberUse the Random Number Generator to create a list of random numbers , based on your specifications. Create a random number table of up to  ...
     6  +6 2014 jun 11least-squares regression lineSimple linear regression. How to define least - squares regression line . How to find coefficient of determination. Includes video lesson on regression analysis.
     6  +3 2014 may 24random generator
     6  +8 2014 may 18mean testHypothesis Test for Mean - Stat TrekHow to conduct a hypothesis test for a mean value, using a one-sample t- test . The test procedure is illustrated with examples for one- and two-tailed tests .
     6  +43 2014 apr 24poisson in excelPoisson Distribution Calculator - Stat TrekThe Poisson Calculator makes it easy to compute individual and cumulative Poisson probabilities. For help in using the .... Analyzing Business Data with Excel
     6  +6 2014 apr 16statistical question answeringStatistics Problems With Solutions - Stat TrekProbability and statistics problems. Completely solved in ... Based on AP statistics exam questions . ... The correct answer is B. The solution involves four steps.
     6  +4 2014 mar 23success calculator softwareBinomial Calculator - Stat Trek? In a binomial experiment, the probability of success on any individual trial is constant.
     7  +94 2014 jun 17test ofaPower of Hypothesis Test - Stat TrekThe power of a hypothesis test is the probability of not committing a Type II error. Power is affected by significance level, sample size, and effect size.
     7  +9 2014 jun 06variance calculator formulateStatistics Formulas - Stat TrekTrek tutorials. Each formula links to a web page that explains how to use the formula . .... Variance of a linear transformation = Var(Y) = a * Var(X). Standardized ...
     7  +14 2014 may 31games statistics solutionBinomial Distribution - Stat TrekA binomial experiment (also known as a Bernoulli trial) is a statistical .... 7 games ? Assume that the teams are evenly matched. Solution : This is a very tricky ...
     7  +1 2014 may 30random number generator
     7  +35 2014 may 15linear regressionSimple linear regression . How to define least-squares regression line . How to find coefficient of determination. Includes video lesson on regression analysis.
     7  +5 2014 apr 28generate random numbers
     7  +29 2014 apr 27standard deviation symbolThis web page describes how symbols are used on the Stat Trek web site to represent ... μ refers to a population mean. σ refers to the standard deviation of a  ...
     7  +23 2014 apr 27how to calculate probabilityProbability and Statistics - Stat TrekWhat is probability? Describes how to interpret probability. Shows how to compute probability . Includes sample problem with solution plus free, video lesson.
     7  +53 2014 apr 22true random number generatorAlthough no computer algorithm can produce numbers that are truly random, Stat Trek's Random Number Generator produces numbers that ...
     7  -1 2014 apr 20scales of measurementMeasurement Scales - Stat TrekMeasurement scales are used to categorize and/or quantify variables. This lesson describes four scales of measurement used in statistical analysis: nominal , ...
     7  +2 2014 apr 14random number generaterUse the Random Number Generator to create a list of random numbers, based on your specifications. Create a random number table of up to ...
     7  +4 2014 apr 02stat test questionsAP Statistics Practice Test - Stat TrekPractice test for multiple-choice section of the Advanced Placement (AP) Statistics exam . Includes 40 questions , each with clear solutions.
     8  +11 2014 jun 24how to compareHow to Compare Data Sets - Stat TrekHow to compare two or more data sets using graphical displays: dotplots, double bar charts, back-to-back stemplots, parallel boxplots, etc. Includes free video.
     8  +68 2014 may 30random number
     8  +2 2014 may 05help with statisticsStatistics and ProbabilityThis web site provides training and tools to help you solve statistics problems quickly, easily, and accurately - without having to ask anyone for help .
     8  +40 2014 may 01statistic for dummiesIdentify a sample statistic . Choose the statistic (e.g, sample mean, sample proportion) that you will use to estimate a population .... Statistics II for Dummies
     8  ~ 2014 apr 26disrecete data exampleDiscrete vs Continuous - Stat TrekDiscrete probability distributions vs continuous probability distributions. Discrete random ... Some examples will clarify the difference between discrete and continuous variables. Suppose the fire ... Counting data points. ▻ Probability laws.
     8  +4 2014 apr 24what are variablesVariables in Statistics - Stat TrekCovers use of variables in statistics - categorical vs. quantitative, discrete vs. continuous, univariate vs. bivariate data. Includes free video lesson.
     8  +68 2014 apr 14independent random variablesRandom Variable Combinations - Stat TrekSometimes, it is necessary to add or subtract random variables. When this occurs ... Sums and Differences of Independent Random Variables : Effect on Variance.
     8  +1 2014 apr 13random number genrator
     9  +10 2014 jun 03parameter error checkHow to Test Hypotheses - Stat TrekHow to test hypotheses using four steps: state hypothesis, formulate analysis plan, analyze ... Test statistic = (Statistic - Parameter ) / (Standard error of statistic).
     9  +31 2014 may 22sixe nUnless the population size is very large, you need to specify the size of the population ( N ). Given these inputs, the following formulas find the smallest sample ...
     9  +10 2014 may 16generate random number
     9  +3 2014 may 12tutorial outliers statisticsInfluential Points in Regression - Stat TrekFor example, when the data set is very large, a single outlier may not have a big effect on the regression equation. AP Statistics Tutorial . Exploring Data.
     9  -3 2014 apr 26sequence number generator
     9  -1 2014 apr 26random number chooser
     9  +7 2014 apr 09what is hypothesisThis assumption may or may not be true. Hypothesis testing refers to the formal procedures used by statisticians to accept or reject statistical hypotheses .
     9  +40 2014 mar 28best sample formsBest Sampling Method - Stat TrekThe effectiveness of a sampling method depends on many factors. Because these factors interact in complex ways, the " best " sampling method is seldom ...
     10  +7 2014 jun 06var xIn the following formulas, X and Y are random variables, and a and b are constants. Expected .... aX + b. Variance of a linear transformation = Var(Y) = a * Var ( X ).
     10  +8 2014 may 26confidence level calculatorThis lesson explains what a confidence interval is and explains how to construct and interpret ... Often, the margin of error is not given; you must calculate it.
     10  +13 2014 may 22letter matrixMatrix Notation - Stat TrekGeneral Matrices . Bold-face, capital letters refer to matrices , italic capital letters refer to matrix elements, and subscripts reveal matrix dimension. For example,.
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