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Statistics
Body of methods dealing with the correction description analysis and interpretation of data

Descriptive stat
the use of tables graphs and numerical measures to display data

Inferential Statistics
use of sample information to learn about a population

Sample
a portion of a population, chosen by means of a simple random sample

Simple random sample
 selected in such a way that every item in the sample population has an
 equal opportunity to be included

Population
the total set or group of items about which information is desired

Census
Measures the entire population

Quantitative variable
 variable whos values are numbers, that result from a count or a
 Measurement

Qualitative variable
Values are categories or classifications, and usually expressed in words

Testing
hold out a certain value and test (could the population proportion be .60)

Confidence interval
one of the two forms of estimation. A prediction/estimate of a population value, for example the population proportion or the population mean, that consists of the range of values and the level of confidence which is the probability that that the interval encompasses or contains the population value

Estimation
estimates the value of a population parameter

