What does it mean to say that two variables are negatively correlated? (1 point)
a) when one variable increases, the other decreases.
b) when one variable increases, the other also increases.
c) when one variable decreases, the other also decreases.
d) both variables change at the same rate.

 a) When one variable increases, the other decreases.

Step-by-step explanation:

If one variable increase as the other increases or one variable decreases, the other also decreases then we says there is positive correlation between them.

If one variable increases as the other decreases the we there is negative correlation between them.

Therefore, if two variables are negatively correlated then it means that " When one variable increases, the other decreases."

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

a

step-by-step explanation: