Make electricity with water
Answer: I think it might be b
A because due to a lot of gas/smoke in the air people in japan wear mask due to the dangerous gas
Both students are correct. The correlation coefficient is the measure of the relationship between two or more variables that are being investigated. This includes the strength and direction of both variables, this means the degree to which the variables are affected one over the other and which variable exerts an influence on the other.
I hope my answer can help you.
