Descriptive Statistics Lab
IntroQ QuestionnaireAt the beginning of each semester, I ask each student to answer on paper (no names) each of these questions. I explain that nobody is required to do this, but that the information would be handy for us to use to learn how to do basic descriptive statistics.A. What is your sex (gender)? Female (1), Male (2), or Other (3)?B. What is the height in inches of your ideal mate?C. What is the color of your eyes ((1 = Brown, 2 = Blue, 3 = Green, 4 = Other)?D. On a 0-10 scale, how frightened of this statistics course are you at this moment? (0 indicates not at all, 10 indicates extreme sympathetic arousal -- a racing heart, dry mouth, sweaty palms, queasy stomach, etc.)E. On a 0 - 100% scale, how likely do you think it is that nuclear weapons (tactical or strategic) will be used in a war or terrorist activity sometime during your lifetime? I explain that 0 means absolutely certain it will not happen, 33% means you think it twice as likely not to happen as to happen, 50% means equally likely to happen as not, 67% means it is twice as likely to happen as not to happen, 100 % means it is absolutely certain to happen -- but I tell them their responses are not restricted to the values (0, 33, 50, 67, 100) used in the explanation.F. What was your SAT Quantitative (Math) score? An approximation is OK. If asked, I tell them that the average is about 500.I have the students pass the data sheets up front, where they are shuffled. I ask one student to help me by calling out the values as I construct tables etc.2. With the eye color data, we prepare a frequency distribution table and a bar graph, arranging the categories in alphabetical order.3. For the Statophobia data, we prepare a frequency distribution table with frequency, cumulative frequency, relative frequency, and relative cumulative frequency. We prepare a histogram and a frequency polygon using the frequency data.4. We do the same with either height in inches of ideal mate or Nucophobia, where we group the data in 5-15 intervals.Later we can work means, medians, and standard deviations on these data -- the Statophobia data are easiest to do with a calculator. ................
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