Answer : Option AExplaination / Solution:
Correlation between two variables shows how the two series are associated with each other. How one variable changes with the change in other
Q2.If two variables are highly correlated, what do you know?
Answer : Option CExplaination / Solution:
High degree of correlation implies that there is a strong relationship between the two variables and that the changes in one variable cause predictable changes in the other variable.
Q3.If paired scores occupy the same positions within their own distributions (high with high and low with low)
Answer : Option BExplaination / Solution:
If high scores on one variable are paired with high scores on other variable and low scores are paired with low scores, correlation will be high and therefore Pearson's r will be high and positive.
Q5.A researcher finds the value of correlation coefficient to be .40 between personal income and the number of years of college completed. Based upon this finding he can conclude that
Answer : Option BExplaination / Solution:
A positive value of correlation coefficient implies that high value of one variable will correspond to a high value of another variable and vice versa.
Answer : Option AExplaination / Solution:
Power Analysis allows us to determine the sample size required to detect an effect of a given size and it does not require the use of r.
Q8.If two variables oppose each other then the correlation will be
Answer : Option AExplaination / Solution:
Negative correlation implies that high value of one variable will correspond to a low value of another variable and vice versa.
Answer : Option DExplaination / Solution:
Spearman's rank correlation is used for ordinal data, where the values have not been measured but have been ranked.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0