Statistical Analysis
- Created by: stephanieolive
- Created on: 25-01-14 03:55
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- Statistical Analysis
- Mean
- Sum of all the data divided by the number of values
- Can't be too trusted because varience is not depicted by the mean. Groups with similar means can have a completely different set of data
- Deviation
- Difference between data point and mean
- Standard deviation:
- Small Standard Deviation- data is clustered around mean
- High Standars Deviation- data is widely spread above/below mean
- Error Bars
- show range of data/standard deviation
- Normal Distribution
- Bell shaped
- depends on mean or standard deviation
- T Test
- formal test for a statistical significant difference between the means of 2 sets of data
- To apply the T Test
- Data must be normally distributed
- Sample size must be greater than or equal to 10
- Correlation and Causation
- The existence of a correlation does not necessarily mean there is a causal relationship
- Mean
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