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Lecture 4 - Graphs and Frequencies Describing Distributions...

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1 Graphs and Frequencies Describing Distributions Tabular and Graphic Descriptions square6 Nominal Measures square6 Classification by category Percent rating source Topic Source N as trustworthy Cancer cures Medical Journal 200 News Tabloid 180 Illegal drugs TV Special 190 Politician 185 Stock Market Business Magazine 200 Broker 205 Future of Textbook 200 the Internet Newspaper 205 95% 6% 92% 3% 80% 17% 90% 20% Ratings of credibility of message of sources Tabular and Graphic Descriptions square6 Ordinal Measures square6 A related series of categories along a scale Comparative Rating of General Attitude toward Internet- based Education by Teachers with Internet and without Internet Available With Internet Without Internet Rating N = 50 (%) N = 100 (%) Very positive 25 11 Moderately positive 23 35 Mildly positive 20 31 Neutral 18 10 Mildly negative 11 7 Moderately negative 3 5 Very negative 0 1
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2 Tabular and Graphic Descriptions square6 Interval and Ratio Measures square6 Points along a scale Ungrouped Data Information-Retention Test administered to 50 people (n = 50) 5 15 4 9 14 11 3 4 7 6 4 10 13 10 5 9 8 7 6 5 8 9 4 6 0 5 11 7 6 4 7 7 11 1 12 9 8 7 7 5 6 12 15
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