Psychology 2500: Data Analysis in Psychology
Name: _____________________________________________________
1) For each of the following data sets, indicate whether the variable of measurement is Nominal, Ordinal, or Numerical (regardless of interval or ratio type):
| No | Or | Nu | |
| flowers, rabbits, hats, apples, eyeglasses, seashells | |||
| counts, dukes, barons, princes | |||
| $10, $5, 100$, 1$, 20$, $30 | |||
| 60 °F, 72 °F, 45 °F, 84 °F, 53 °F | |||
| mouse, cat, dog, horse, elephant |
2) Let’s say that you go to the top of the Business School building once a day for a whole year and record both the intensity of light coming from the sky and the air temperature. If you were to plot air temperature as a function of light intensity, which of these three graphs below should you choose? A B C
3) Which of the graphs should you choose if you visited a beach and wanted to plot the number of beach umbrellas that are red, blue, green, and purple? A B C
4) A fictitious survey of the IQ of UNO students obtained data from 3,000 students. The following table gives the frequency distribution of IQ scores. Draw a histogram describing these data. (Be sure to have properly labeled axes.)
| IQ | 90-99 | 100-109 | 110-119 | 120-129 | 130-139 | 140-149 | 150-159 |
| Students | 100 | 600 | 1100 | 700 | 300 | 100 | 100 |
5) Janet surveyed the mouse population in her attic. She found 15 mice, whose body weights were: 10, 10, 15, 15, 15, 20, 20, 20, 25, 25, 25, 25, 25, 30, and 30 grams. What are the mean, median, and mode of this population?
