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Statistical Analysis (Tools (Correlation and Causation: Correlation refers…
Statistical Analysis
Tools
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Standard Deviation: Is a measure of the spread of most of the data.
It is used to summerize the spread of variables around the mean.
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T- tests: Is a type of hyphotesis that refers to examine wether two means are statiscally significantly different from each other or wether the difference between them simply occured by chance.
Correlation and Causation: Correlation refers to an existing relation between statistical variables which tend to vary, be associated, or occur together in a way not expectedon the basis of chance alone.
Causation refers to the act which produces an effect.
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Chi square test: Will be learned next school year, when we go into the theme of Ecology.
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Errors
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Systematic Errors: They occur when there is somethiong wrong with the instrument or because the instrument is missused by the experimenter.
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Measurements
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Degrees of Precision: Also known as Uncertainty, is the margin of error.
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