LNC Posted May 23, 2014 Share Posted May 23, 2014 Which set of numbers shows the least variability? A. {2,4,6,10} B. {2,3,5,7} C. {3,9,18,27} D. {3,7,8,16} Does this mean difference between largest and smallest number in set? Quote Link to comment Share on other sites More sharing options...
AmandaVT Posted May 23, 2014 Share Posted May 23, 2014 I would say B because they're the least spread out? I haven't done any kind of math beyond balancing a checkbook and excel formulas since college though! Quote Link to comment Share on other sites More sharing options...
AndyJoy Posted May 23, 2014 Share Posted May 23, 2014 Yes, B: http://onlinestatbook.com/2/summarizing_distributions/variability.html Quote Link to comment Share on other sites More sharing options...
WVNA Posted May 23, 2014 Share Posted May 23, 2014 The answer is B which is found by looking at the standard deviation of the numbers that are given. Here's a page that calculates it for you, but this type of calculation with a small set of numbers can be done on a standardized test pretty quickly too. http://www.mathsisfun.com/data/standard-deviation-calculator.html Quote Link to comment Share on other sites More sharing options...
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