Flashcards
Pearsons and Spearmans population correlation coefficient
Cards in this deck (22)
- 1What is the equation for Pearson's Product Moment Correlation Coefficient?Rp= SXY/(sxx*syy)1/2
- 2For what range of values does the correlation exist?-1
- 3What is Rho?The population coefficient
- 4P>0 what do you expect the outcome to be?positive correlation one tail test
- 5P is neither then the outcome is...either positive or negative (two tail test)
- 6P<0 what is the outcome?Negative correlation (one tail test)
- 7What is correlation?The association between two variables is linear
- 8What is the equation for Spearman's rank correlation coefficient?1-6(sum of d squared)/n(n^2-1)
- 9If population is Bivariate Normal Distribution what correlation do we use?PPMCC
- 10What is the typical Bivariate normal graph ?
- 11What happens if you have the same number?Rank then add them up and divide by how many there are.
- 12If y is only increasing thenits monotonic.
- 13What is monotonic?function never increases nor decreases as independent variable increases.
- 14If correlation is increasing..correlation is closer to 1
- 15If correlation is decreasing...correlation -1
- 16Non LinearSpearman's
- 17For Spearmans to work the test must be...Monotonic
- 18For Ho what is the association?No association between the variables in the underlying population.
- 19The significance level is...the probability of rejecting null hypothesis when it is in fact true
- 20A property of a Bivariate Normal Population is...for any value of one variable, the distribution of the other is normal.
- 21What is an elliptical profile?
- 22For Pearsons to work...the variables must be random
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- A-Level Maths (Statistics 2) Flashcards on Pearsons and Spearmans population correlation coefficient, created by gym.freakjekka on 07/10/2015.
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