Answer:
The standard deviation can be an effective tool for teachers. The standarddeviation can be useful in analyzing class room test results. A large standarddeviation might tell a teacher the class grades were spead a great distance fromthe mean. A small standard deviation might reflect the opposite of thepreceding
I guess it might be the "T<span>ower of Babel" not sure about it, give me a minute and I'll give you the correct answer. </span>