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Tenor Chapter 10 Pre-Algebra
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Terms in this set (26)
statistics
The branch of mathematics that deals with collecting, organizing, and interpreting data.
measures of center
For a list of numerical data, numbers that can represent the center of the data.
measures of variability
Used to describe the distribution of statistical data.
range
A measure of variation that is the difference between the least and the greatest values in a set of data.
quartiles
The values that divide a set of data into four equal parts.
interquartile range
The range of the middle half of a set of data. The different between the third quartile and the first quartile.
outlier
Data that are more than 1.5 times the interquartile range beyond the quartiles.
mean absolute deviation
The average distance between each data value and the mean.
box plot
A diagram that divides a set of data into four equal parts using the median and quartiles. A box is drawn around the quartile values and whiskers extend from each quartile to the extreme data points.
sample
The subgroup or subset of a population used to represent the whole population.
population
A larger group used in statistical analysis.
unbiased sample
A random sample that is representative of a larger population.
random
Outcomes occur at random if each outcome is equally likely to occur.
simple random sample
A sample where each item or person in the population is as likely to be chosen as any other.
stratified random sample
A sampling method in which the items or people are divided into similar, non-overlapping groups.
systematic random sample
A sampling method in which the items or people are selected according to a specific time or item interval(rule).
biased sample
A sample that is not representative of a population.
convenience sample
A sample which includes members of the population that are easily accessed.
voluntary response sample
A sample which involves only those who want to participate in the sampling.
outcome
Possible result of a probability experiment.
simple event
One outcome or a collection of outcomes.
probability
The ratio of the number of ways a certain event can occur to the number of possible outcomes. P(event)=# of favorable outcomes/# of possible outcomes.
sample space
The set of all possible outcomes.
complement
One of two parts of a probability making a whole.
theoretical probability
What should occur in a probability event.
experimental probability
What actually occurs in a probability event.
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