Question

Which data set has a greater spread? Why?

Set A: {38, 12, 23, 48, 55, 16, 18}
Set B: {44, 13, 24, 12, 56}

Answer 1

http://mathbitsnotebook.com/Algebra1/StatisticsData/STSpread.html That should give you a lot of options as for what to do with this problem

Answer 2

I would use MAD, or mean absolute deviation