help text book useless: Extreme scores don't effect which of these measures of disp.?

[bourne81]

So I have the following question: Extreme scores do not effect which of the following measures of dispersion

variation ratio
range
variance
standard deviation

I can't find the answer and am not a math genius. any help is appreciated

 

[Deleted member 4993]

Effect of extreme scores

So I have the following question: Extreme scores do not effect which of the following measures of dispersion

variation ratio
range
variance
standard deviation

I can't find the answer and am not a math genius. any help is appreciated

Did you use Google to answer these questions?

 

[Dr.Peterson]

So I have the following question: Extreme scores do not effect which of the following measures of dispersion

variation ratio
range
variance
standard deviation

I can't find the answer and am not a math genius. any help is appreciated

Check the definitions, then pick a sample data set and think about what changing an extreme score would do to each measure. For example, how would changing 1,2,2,100 to 1,2,2,200 affect each? Since variation ratio is included, I made these have a mode.

You don't necessarily have to actually calculate the measures; just contemplate it.