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15 Cards in this Set
- Front
- Back
alpha
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symbol used to represent the probability of a Type 1 error. Also called the significance level of the hypothesis test. Denoted by the Greek letter alpha.
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alternative hypothesis
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statement that is equivalent to the negation of the null hypothesis, denoted by Hsuba
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beta
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sybol used to represent the probability of a Type 2 Error. Denoted by the Greek letter beta
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biased sample
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a smaple for which some type of systematic error has been made in the selection of subjects for the sample
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binomial experiment
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a probability experiment in which each trialhas only two outcomes, there is a fixed number of trials, the outcomes of the trials are independent, and the probability of success remains the same for each trial.
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bivariate data
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data arranged in pairs
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blinding
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procedure used in experiments whereby the subject doesn't know whether he or she is receiving a treatment or a placebo
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boxplot
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a graphical representation of the five number summary
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categorical data
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data that can be separated into different categories that are distinguished by some nonnumeric characteristic
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census
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collection of data from every element in the population
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central limit theorem
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a theorem that states that as the sample size increases, the shape of the distribution of the sample means taken from the population with mean (come back and edit later)
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cluster sampling
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a sample obtained by dividing the population area into sections (or clusters), then randomly selecting a few of those sections and then choosing ALL of the members of those selected sections
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coefficient of the determinant
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a measure of the variation of the dependent variation that is explained by the regression line and the indpendent variable; the ratio of explained variation to total variation
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complement of an event
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all outcomes in which the event does not occur
P(~A)=1-P(A) |
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completely randomized design
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procedure in an experiment whereby each element is given teh same chance of belonging to the different categories or treatments
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