inferential statistics - answer-method that uses sample evidence and probability to reach conclusions about unmeasurable populations
empirical distribution - answer-scores that come from observations
theoretical distribution - answer-hypothesized scores based on mathematical formulas and logi...
inferential statistics - answer-method that uses sample evidence and
probability to reach conclusions about unmeasurable populations
empirical distribution - answer-scores that come from observations
theoretical distribution - answer-hypothesized scores based on mathematical
formulas and logic
rectangular distribution - answer-distribution in which all scores have the
same frequency
binomial distribution - answer-distribution of the frequency of events that
can have only two possible outcomes
normal distribution - answer-a bell-shaped theoretical distribution that
predicts the frequency of occurrence of chance events
z score - answer-scored expressed in standard deviation units
random sample - answer-subset of a population chosen so that all samples of
the specified size have an equal probability of being selected
biased sample - answer-sample selected in such a way that not all samples
from the population have an equal chance of being chosen
sampling distribution - answer-theoretical distribution of a statistic based on
all possible random samples drawn from the same population
expected value - answer-the mean value of a random variable over an
infinite number of samplings
standard error - answer-standard deviation of a sampling distribution
central limit theorem - answer-the sampling distribution of the mean
approaches a normal curve as N gets larger
t distribution - answer-theoretical distribution used to determine probabilities
when sigma is unknown
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