Question

before you can begin calculating the variance, you must first: find the range find the mode find the mean find the median

Explanation:

Step1: Recall variance formula

The formula for variance of a set of data values \(x_1,x_2,\cdots,x_n\) is \(\text{Var}(X)=\frac{\sum_{i = 1}^{n}(x_i-\bar{x})^2}{n}\), where \(\bar{x}\) is the mean of the data - set. So, we need to find the mean first.

Answer:

find the mean