# Statistics 2 Definitions

Although definition questions tend to be one markers, it's vital to pick them up as they're easy give aways. Case in point: have a look at this quiz and revision cards each day to help drill them in whilst building up to the exam.

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• Created by: Tom
• Created on: 01-05-13 20:08
What is a population?
A collection of individual items
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What is a sample?
A selection of individual items from a population
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What is a finite population?
A population where each individual member has a number
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What is an infinite population?
A population where it is impossible to number each member
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What is a sampling unit?
An individual member of a population
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What is a statistic?
A function calculated with no unknown parameters
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What is a sampling distribution?
All possible values of a statistic and the probability of each occuring
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What is a hypothesis test?
A mathematical process to examine a population parameter value
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What is a critical region?
The range of values that would lead you to reject Ho
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What is a critical value?
The boundary value(s) of a critical region.
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What is the actual significance level?
The probability of rejecting Ho.
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## Other cards in this set

### Card 2

#### Front

What is a sample?

#### Back

A selection of individual items from a population

### Card 3

#### Front

What is a finite population?

### Card 4

#### Front

What is an infinite population?

### Card 5

#### Front

What is a sampling unit?