Kw: Grouped vs. Ungrouped Data, How to Group Data, Populations vs. Samples, Measures of Central Tendency, Measures of Dispersion, Formulas for Ungrouped Data, VARIANCE = s2 or ó 2, STANDARD DEVIATION = s or ó
"In a time of universal deceit - telling the truth is a revolutionary act."
"In Germany they came first for the Communists, and I didn’t speak up because I wasn’t a Communist. Then they came for the Jews, and I didn’t speak up because I wasn’t a Jew. Then they came for the trade unionists, and I didn’t speak up because I wasn’t a trade unionist. Then they came for Catholics, and I didn’t speak up because I was a Protestant. Then they came for me, and by that time no one was left to speak up."
~Martin Neimoller, reflecting upon Germany’s fall to the Nazis
"A man is not idle because he is absorbed in thought. There is a visible labor and there is an invisible labor." ~ Victor Hugo