Friday, July 19, 2013

HISTOGRAM


















http://gnuplot.sourceforge.net/demo_4.4/histograms.html
A histogram is a bar chart representing a frequency distribution. A histogram is different from a bar graph because in a histogram the bars must all touch each other so that the measured data measurements on the x-axis are continuous. The above chart shows the immigration of Northern Europe. The viewer can see that the Sweden has had the most amount of immigrants leave the country. 

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