Which of the following is the function of Statistics?

Q. In the context of weather forecasts, which of the following statements convey qualitative data?

Q. Which of the following method of error is most preferred in forecasting ?

Q. Consider the following complex function:
$f\left(z\right)=\frac{9}{(z-1)(z+1{)}^2}$
Which of the following is one of hte residues of the above function?

Q. Which of the following is a technique for forecasting?

Q. Which of the following functions is managerial accounting intended to facilitate?