http://images.google.com/imgres?imgurl=http://cache.eb.com/eb/image%3Fid%3D75089%26rendTypeId%3D4&imgrefurl=http://www.britannica.com/eb/art-70823/Histogram-chart-Histogram-showing-chest-measurements-of-5732-Scottish-soldiers&h=310&w=300&sz=9&hl=en&start=136&sig2=vth7Ri3AUr0dsY7hG78g0w&um=1&tbnid=HATa-rB0Mm1F5M:&tbnh=117&tbnw=113&ei=nmksSKjGK4eOigHZ16XoBQ&prev=/images%3Fq%3Dhistogram%26start%3D120%26ndsp%3D20%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-SearchBox%26rlz%3D1I7SUNA%26sa%3DNThis map explains the number of soldiers with different circumferences in inches for their chest with bars. It shows that the most soldiers surveyed (over 1,000) had an average chest circumference of 40 inches.
This map also has a normal distribution curve on it, which explains the bell shape of chest circumference inches to soldiers.
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