**TI83F* AppVariable file 12/24/08, 18:30 ÿGLA112ÿýnav 868E89BEB1644A6EA4327E33887122BEGLA112./GLA1121   biased sample]biased sample:ÖA sample in which one or more parts of the population are favored over others.  combinationGcombination:ÖAn arrangement or listing in which order is not important.  complements>complements:ÖOne of two parts of aÖprobability making a whole. compound eventEcompound event:ÖAn event which consists of two or more simple events. conditional probability pconditional probability:ÖThe probability of an event under the condition that someÖpreceding event has occurred. dependent eventsodependent events:ÖTwo or more events in which the outcome of one event affects the outcome of the other events. discrete random variable _discrete random variable:ÖA variable with a value that is a finite number of possible outcomes. empirical studydempirical study:ÖPerforming an experiment, collecting and combining data, and analyzing the results.  expected value 5expected value:ÖThe weighted average of all outcomes.   experiment Rexperiment:ÖData are recorded fromÖoutcomes involving characteristics of a sample.  experimental probability‹experimental probability:ÖThe ratio of the number of positive outcomes to the total number of events or trials in a probability experiment.   factorialÌfactorial:ÖThe expression of n!, read n factorial, where n is greater than zero, is the product of all positive integers beginning with n and counting backward to 1.ÖExample: Ö5! = 5 4 3 2 1 = 120  independent eventsyindependent events:ÖTwo or more events in which the outcome of one event does not affect the outcome of the other events. mean absolute deviation ­mean absolute deviation:ÖThe average of the absolute values of differences between the mean and each value in a data set. It is used toÖpredict errors and to judge equality. measures of central tendency ameasures of central tendency:ÖNumbers or pieces of data that can represent the whole set of data. measures of variation Mmeasures of variation:ÖUsed to describe theÖdistribution of statistical data. mutually exclusive eventsSmutually exclusive events:ÖTwo or more events whose outcomes can never be the same. observational study ]observational study:ÖData are recorded and made regarding certain activities within a sample.  parameter9parameter:ÖA characteristic of the population as a whole.  permutationYpermutation:ÖAn arrangement or listing of a group of objects in which order is important.  populationVpopulation:ÖA large group of data from which a sample of statistical data is selected. probability distribution [probability distribution:ÖThe probability of every possible value of the random variable x. probability histogram nprobability histogram:ÖA way to give the probability distribution for a random variable and obtain other data. qualitative data ?qualitative data:ÖData that can not be givenÖa numerical value. quantitative data ?quantitative data:ÖData that can be given asÖa numerical value. random variable Yrandom variable:ÖA variable with a valueÖthat is the numerical outcome of a random event. relative frequency Xrelative frequency:ÖThe number of times an outcome occurred in a probability experiment. sampleHsample:ÖSome portion of a larger group selected to represent that group.  sample space=sample space:ÖThe list of all possible outcomes for an event. simple random sample _simple random sample:ÖA sample that is as likely to be chosen as any other from the population.  simulationMsimulation:ÖA mathematical experiment that approximates a real-world process.  standard deviation 7standard deviation:ÖIs the square root of theÖvariance.!  statistic /statistic:ÖA quantity calculated from aÖsample." statistical inference dstatistical inference:ÖThe statistics of a sample are used to draw conclusions about the population.# stratified random sample©stratified random sample:ÖA sample in which the population is first divided into similar, nonoverlapping groups; a simple random sample is then selected from each group.$ survey Dsurvey:ÖData are from responses given by a sample of the population.% systematic random sample€systematic random sample:ÖA sample in which the items in the sample are selected according to a specified time or item interval.& theoretical probabilityptheoretical probability:ÖThe ratio of the number of favorable outcomes to the total number of possible outcomes.' univariate data (univariate data:ÖData with one variable.(  variance Mvariance:ÖThe mean of the squares of the deviations from the arithmetic mean.§