Answer the following questions concerning measures of spread of a numerical variable. (a) Under what circumstances will the standard deviation be 0? O When the data values are close together. O When...

Extracted text: Answer the following questions concerning measures of spread of a numerical variable. (a) Under what circumstances will the standard deviation be 0? O When the data values are close together. O When the data values are far apart. O When the data values are all the same. (b) What happens to the standard deviation as the numbers become more spread out? O It increases. O It decreases. O It stays the same.