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Stats 2 test
stats 2 test
10
Mathematics
Undergraduate 1
03/07/2012

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Cards

Term
What is the goal of sampling?
Definition
to make inferences about a population from what we know about our sample data.
Term
Obviously Biased
Definition
Town Talk Poll
Term
Likely Biased
Definition
Voluntary Response Polls
Term
Simple Random Sampling
Definition
a sample of n individuals chosen from the population
Term
These polls are designed to be biased
Definition
Push Polls
Term
Margin of Error (MOE)
Definition
a numerical way of acknowledging that you know your sample statistic is not going to give perfect knowledge about the population parameter; inextricably attatched to some notion of confidence level.
Term
Confidence Statement
Definition
that statistic plus or minus the MOE; will depend on many things, including the level of confidence.
Term
You can take a 95% MOE to be
Definition
MOE = 1/√n
Term
A 95% confidence statement is of the form
Definition
Statistics plus or minus MOE
Term
You can change the confidence level by calculating
Definition
MOE = Z/2(1/√n)
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