Answer:
→ a. -4.5
I hope this is right......
Answer:
Commutative
Step-by-step explanation:
Given
Required
What law is applied
The applied law is commutative law of addition.
This law states that:
So:
When the positions of 2 and b are interchanged, we have:
Remove bracket
Answer: partial correlation.
Explanation:
partial correlation measures the degree of association between two random variables, with the effect of a set of controlling random variables removed. If we are interested in finding to what extent there is a numerical relationship between two variables of interest, using their correlation coefficient will give misleading results if there is another, confounding, variable that is numerically related to both variables of interest. This misleading information can be avoided by controlling for the confounding variable, which is done by computing the partial correlation coefficient.
