There is a relation between the number of safety classes employees attend and the number of accidents in the company. Then the correct option is D.
Correlation is the method for making the relationship between the two variables. To know about the variable whether they relate or not.
a. The positive correlation between the number of windows in a building and the number of steps in a building. There is no relation between the window and the step of the building. This is incorrect.
b. The positive correlation between the height of a person and the number of pairs of socks he owns. There is no relation between the height of the person and the number of pairs of socks he owns. This is incorrect.
c. The negative correlation between the sales of vacuum cleaners and the sales of boots in a store. There is no relation between the sales of vacuum cleaners and the sales of boots in a store. This is incorrect.
d. The negative correlation between the number of safety classes employees attend and the number of accidents in the company. There is a relation between the number of safety classes employees attend and the number of accidents in the company. So, this is correct.
More about the correlation link is given below.
https://brainly.com/question/10207538
