S1 Chapter 1: Introduction to Statistics
- Created by: georgiamckibbin
- Created on: 17-01-17 19:35
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- Introduction to Statistics
- Variables
- Qualitative Variable
- do not have a numerical value
- Quantitative Variables
- Have a numerical value
- discrete
- there are no possible values in between
- continuous
- can take any value in an interval
- Qualitative Variable
- Populations
- All the possible data
- A parameter is a numerical property of a population
- Data
- Primary Data
- Collected for a specific investigation
- Secondary Data
- Not collected specifically for an investigation
- Primary Data
- Sampling without bias
- Random Sampling
- Every member of the population must have an equal chance of being in the sample
- Random Sampling
- Sample
- Part of the data
- A statistic is a numerical property of a sample
- Variables
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