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Statistics Test 1
Statistics Test 1
22
Mathematics
Undergraduate 3
08/29/2011

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Term
Sampling
Definition
Techniques used to collect information. Goal to collect a measurable number of individuals representative of the population
Term
Descriptive Statistics
Definition
Techniques used to condense and describe sets of data
Term
Inferential Statistics
Definition
Techniques used to systematically draw conclusions about a population from a set of sample data
Term
Statistical Methods
Definition
Combinations of the descriptive and inferential techniques
Term
Population
Definition
The totality of elements in a well defined group to be studied.
Term
Sample
Definition
A subset of a population
Term
Three areas of statistics
Definition
Sampling, Descriptive, and Inferential
Term
Four types of errors
Definition
Coverage, Non-response, Inaccurate response, Measurement
Term
Simple Random Sampling
Definition
A method of choosing a sample such that each sample of the same size has the same chance of being chosen
Term
Three classes of data
Definition
Constant, Variable, Random Variable
Term
Discrete Data
Definition
Quantitative data that has an easily countable number of possible values
Term
Continuous Data
Definition
Quantitative data that has an infinite number of possible values
Term
Observational Study
Definition
Measures a characteristic in a sample without controlling the experimental units
Term
Experimental Design
Definition
Controls the experiment
Term
Independent Design
Definition
Experimental units chosen randomly
Term
Dependent design
Definition
1/2 chosen randomly 1/2 chosen by distinguished characteristic
Term
Lurking Variables
Definition
Characteristics in a sample not measured but affect the results.
Term
Double Blind
Definition
Neither researcher nor experimental unit knows the treatment being applied
Term
Relative Frequency
Definition
Frequency/Sum
Term
Cumulative Frequency
Definition
Sum of frequency
Term
Cumulative Relative Frequency
Definition
Sum of relative frequency
Term
Pareto Chart
Definition
Bar chart drawn in decreasing height
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