Question

suppose the correlation coefficient between a baby’s weight and the price of a computer is 0.87

Answer 1

A . as the baby gains weight, computer prices tend to decrease.
B . increased computer prices cause the baby to gain weight

Answer 2

C . the baby’s weight gain causes the price of a computer to increase
D . As the baby gains weight, computer prices tend to increase

Answer 3

please give me answer

Answer 4

I think we can safely rule out both options that imply the computer prices and the weight of the baby are causally related; it's more likely just a coincidence. Now, looking at the correlation coefficient, we'll notice that it's a positive number. In other words, if you were to plot the baby's weight by the computer prices, you'd get a rough line that fits the equation y=0.84x + b (b is unknown to us).
Now, from what you know about linear equations, would you say that the weight and price increase with one another or that one increases as the other decreases?