McqMate
Q. |
(‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐) |
A. | extraneous variable are never preset. |
B. | A positive correlation usually exists. |
C. | Negative correlation usually exists. |
D. | Manipulation of the independent variable. |
Answer» D. Manipulation of the independent variable. |
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Research Methodology (RM)