1. true or false: The correlation coefficient is independent of the scale of measurement of the variables.

2. An r value of -1 shows that
a. x and y have a causal relationship because the value of x completely accounts for the corresponding value of y.
b. x and y do not have a causal relationship because the r value is negative.
c. x and y have a very weak relationship because the r value is less than zero.
d. x and y have a strong relationship.

1. true?
2. D?

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