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Statistics - Coggle Diagram
Statistics
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Standard Deviation
σ
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- as value of SD increases
- degree of variation within population increases
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Student t test
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probability
p < 0.05
- difference between means = SIGNIFICANT
- null hypothesis is REJECTED
- there is a definite reason for difference in mean (more than chance)
p > 0.05
- difference between means = NOT SIGNIFICANT
- null hypothesis = ACCEPTED
- difference in means = due to chance/other factor
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