Does variance changes when data changes?
YES, as mean will change and if mean gets change variance will also get change.But adding a constant value to a random variable does not change the variance
“To be changed” in English means to be different from before so the word “change” means different or the act of being different. And the word “variance” is a noun which means the measure of change. In mathematics and science variance is the measure of the change of different values in particular record or data table or set of values. The word change in mathematics means change in value of a variable.