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Author Question: Before calculating a correlation coefficient, a researcher wants to determine whether the ... (Read 56 times)

roselinechinyere27m

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on: Jun 20, 2018
Before calculating a correlation coefficient, a researcher wants to determine whether the relationship between the two variables is linear. Which of the following would be most appropriate to use?
 
  a. Histogram c. Data matrix
  b. Frequency polygon d. Scatterplot

Question 2

If X is positively correlated with Y, one can conclude that
 
  a. X probably causes changes in Y.
  b. Y probably causes changes in X.
  c. changes in X and Y are both probably caused by Z.
  d. None of these is true.


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helenmarkerine

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Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

D


roselinechinyere27m

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Reply 2 on: Jun 20, 2018
Wow, this really help

chereeb

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Reply 3 on: Yesterday
Excellent

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