Flashcards
Statistical Tests
Flashcards do conjunto (21)
- 1What are the 3 statistical tests?Chi-squared test
Student's T-Test
Correlation Coefficient - 2Is Standard Deviation a statistical test?No
- 3When is a Chi-Squared test used?When the data is categoric
- 4How do you know if the data is categoric (how can it be identified?)The investigation has the frequency of individuals within particular categories
- 5When are Chi-Squared tests often used?Inheritance
- 6When a T Tests used?Comparing the mean values of 2 sets of data
- 7What does the T test do?To see if the mean differences are significant
- 8When is a Correlation Coefficient used?Examining an association between 2 sets of data
- 9What is used in a Correlation Coefficient?Spearman's Rank
- 10What does 1 show?Indicates perfect positive correlation
- 11What does -1 show?A perfect negative correlation
- 12What does 0 show?No correlation at all
- 13What is the "probability P value"?Indicates the probability that the results are due to chance
- 14How is this calculated?1-P value
- 15What does it mean if there is a significant difference at P=0.05You can be 95% sure that the results are not due to chance
- 16What would a better value of significance be? Why?P= 0.01
99% sure not due to chance - 17What can be shown if a spearman's rank shows a significant correlation at P<0.05?You can be more that 95% sure the results are not due to chance
- 18What does standard deviation show?Which populations have the most variation
The spread around the mean - 19What can it be used to see?A significant difference between results
- 20How is a significant difference shown?SD bars do not overlap
- 21What do overlapping SD bars show?Significant differnce
Informações
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- Biology AS (Topic Flashcards) FlashCards sobre Statistical Tests, criado por Alice Hathaway em 12-05-2017.
- Criado por
- Alice Hathaway
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