Answer:
Step-by-step explanation:
60=x+45
x=15
Answer:
9
Step-by-step explanation:
Answer:
the third one
Step-by-step explanation:
all you have to do is multiply the exponents
Using a calculator, it is found that the correlation coefficient for this data is given by:
B. -0.901.
<h3>What is a correlation coefficient?</h3>
- It is an index that measures correlation between two variables, assuming values between -1 and 1.
- If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.
- If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.
To find the coefficient, which has symbol r², we input in a calculator the values of x and the values of y, hence:
r² = -0.901.
Which means that option B is correct.
More can be learned about correlation coefficients at brainly.com/question/25815006
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