Term

Definition


Term

Definition


Term

Definition
element/set of elements that forms basis of selection. 


Term

Definition
actual list of sampling unit 


Term

Definition
element or aggregation of elements which the data is to be collected and/or analyzed. 


Term
Simple random sampling design 

Definition
most basic, every member of population has an equal chance of being chosen, but seldom used due to being labor intensive. 


Term
Systematic random sampling design 

Definition
(Interval random sampling)consists of a master list of members of the population, then setting a interval by dividing total # of units by present size of sample. Use is good for long lists, large samples, but assumes no order is present and the order is known as periodicity. Can be biased. 


Term
Stratified random sampling 

Definition
consists of classifying the elements, dividing the target population categoreis of homogeneous groups and then draws independent random samples from each strata/category. Uses a smaller sample size and takes into account the effect on dependent variables. 


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Definition
similar to stratified but groups are naturally occurring. The clusters are chosen randomly and can have more than one stage. 


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Definition
repetition of two sampling concepts (listing and sampling). 


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Definition
incudes, ttest, ptest, chisquared to conclude the sample was drawn is of significance and not by chance or coincidence. 


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Definition
whether the findings are important and can be generalized and provide if the study was conducted again the results would be the same. 


Term
Common uses of stat inference 

Definition
test differences between measures of central tendency, of percentages, proportions, rates, association and duration and rate of change of trends. 


Term

Definition
between mean rates and proportion 


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Definition
analysis of variance, regression, slope and direction of trends. 


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Definition


Term

Definition
zero  no differences not indicative of the population. 


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Definition


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Definition


Term

Definition
range of values around sample stat that the "true" or population value lies. lower range (narrow) and higher range (wide) 


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Significance important to determine 

Definition
to extent results can be attributed to the project, size/magnitude of differences, program costs and other support for quantitative results. 


Term

Definition
objectivity, basis for judging, taking descriptive stats and putting into relevant terms 


Term
Considerations for statistical testing 

Definition
the risk, similarity of population, applicability of test to the data, and specific decisions about project. 


Term
Statistical testing provides 

Definition
relationships between activities/outcomes and generalization of results to similar times, places and situations. 


Term

Definition
cost of collection, time, and hypothesized relationships and technical capability. 


Term

Definition
lower alpha value, lower risk of Type I lower alpha value, more rigorous the test increase alpha value (.01.05) increase in type I error, decrease type II error 

