# Maths Stats Chapter 1 Flashcards

• Created by: 13gpascoe
• Created on: 29-10-18 20:00
Population
Whole set of items that are of interest.
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Census
Observes or measures every member of a population.
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Sample
Selection of observations taken from a subset of the population. Used to find out info about population as a whole.
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Sampling units
Individual units of a population.
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Sampling frame
List of sampling units.
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Simple Random Sample
Every sample of size n has an equal chance of being selected.
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Systematic Sampling
When the required elements are chosen at regular intervals from an ordered list.
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Quota Sampling
Interviewer selects a sample that reflects the characteristics of the whole pop.
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Opportunity Sampling
Taking the sample from people available at the time the study is carried out and who fit the criteria you are looking for.
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Quantitative Variables/Data
V/D associated with numerical observations.
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Qualitative Variables/Data
V/D associated with non-numerical observations.
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Continuous Variable
V that can take any value in a given range.
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Discrete Variable
V that can only take specific values in a given range.
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## Other cards in this set

### Card 2

#### Front

Observes or measures every member of a population.

Census

### Card 3

#### Front

Selection of observations taken from a subset of the population. Used to find out info about population as a whole.

### Card 4

#### Front

Individual units of a population.

### Card 5

#### Front

List of sampling units.