Legos and Statistics

How well are Lego's designed?  And how constant is that design over the last 40 years?  This article answers all!  Means, standard devs, histograms, and regression lines--cool!

Here is the plan. Use a micrometer (the tool, not the unit) to measure the width of 2 bump LEGO blocks. Plot a histogram of the different sizes. Just to be clear, the micrometer is a tool that measures small sizes – around a millimeter to 20 millimeters. This particular one has markings down to 0.01 mm – for my measurements, I will estimate the size to 0.001 millimeters. Oh, one more point. There are lots of pieces that are two LEGO dots. For this data, I am mostly using 2 x 1 and 2 x 2 pieces. I will assume that both have the same size in the 2 bump direction.

Here is my first set of data...