Quiz
BIOL2022 L01 Why statistics? Organisms are variable in a variable world.
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Questions in this quiz (5)
1Variability, intrinsic vs extrinsic: Measurement error is an example of [blank_start]____________[blank_end]; ‘natural’ variation within the system (e.g. body sizes of different individuals) are an example of [blank_start]____________[blank_end].
- AExtrinsic
- BIntrinsic
- CNone! Stupid answer.
2Dispersion, spread: [blank_start]____________[blank_end] is the square root of [blank_start]____________[blank_end].
- AStandard deviation
- BVariance
- CStandard Error
3Complete the following formula:
- An (sample size)
- Bvariance
- Cstandard deviation
- Dstandard error
4When to use main tests:
Differences between 2 means: [blank_start]____________[blank_end];
Differences between >2 means: [blank_start]____________[blank_end];
Linear and/or curvilinear relationships: [blank_start]____________[blank_end];
Frequencies (counts): [blank_start]____________[blank_end];
(All of these test null hypotheses)- At-test
- BANOVA
- CRegression and correlation
- DG test and Chi squared
- EChi squared only
- FRegression only
- GCorrelation only
- HG test only
5Correlation vs regression:
- ACorrelation defines a relationship between variables (causal or not)
- BRegression states that one variable predicts another
- CRegression defines a relationship between variables (causal or not)
- DCorrelation states that one variable predicts another
Information
- Description
- Module 1, Lecture 1 SUMMARY: - Must make questions explicit, and state hypotheses and logical predictions - Correlative approach will tell you that a pattern exists, but (in most cases) only an experiment will tell you why - A simple framework can make life easier!
- Author
- Michael Jardine
- Language
- English
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