National History Day
Propaganda Posters of World War I: Analyzing the Methods Behind the Images
The power of a picture. During the events surrounding World War I, propaganda posters were widely distributed in American society to sway the emotions of its citizens. By analyzing World War I propaganda posters in the first installment...
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Using Sample Data to Compare the Means of Two or More Populations II
The 23rd segment in a series of 25 presents random samples from two populations to determine whether there is a difference. Groups determine whether they believe there is a difference between the two populations and later use an...