Download Homework - Psychological Statistics | PSY 3204 and more Assignments Psychology in PDF only on Docsity! FALL 2008 PSY STATS HOMEWORK #1 1. A client rates her satisfaction with her vocational counselor as a 3 on a 4-point scale from 1 = not at all satisfied to 4 = very satisfied. What is the (a) variable, (b) possible values, and (c) this client's score? 2. Give the level of measurement for each of the following variables: (a) ethnic group to which a person belongs, (b) number of times a mouse makes a wrong turn in a laboratory maze, and (c) position one finishes in a race. 3. A particular block in a suburban neighborhood has 20 households. The number of children in these households are as follows: 2,4,2,1,0,3,6,0,1,1,2,3,2,0,1,2,1,0,2,2. Make (a) a frequency table, (b) a histogram, and (c) a frequency polygon. Then, (d) describe the general shape of the distribution. 4. Fifty students were asked how many hours they studied this weekend. Here are their answers: 11,2,0,13,5,7,1,8,12,11,7,8,9, 10,7,4,6, 10,4,7,8,6,7, 10,7,3,11, 18,2,9,7,3,8,7,3, 13,9,8,7,7, 10,4, 15,3,5,6,9,7, 10,6. Make (a) a frequency table, (b) a histogram, and (c) a frequency polygon. Then, (d) describe the general shape of the distribution. 5. These are the scores on a measure of sensitivity to smell taken by 25 chefs attending a national conference: 96,83,59,64,73,74,80,68,87,67,64,92,76,71,68,50,85, 75, 81,70,76,91,69, 83, 75. Make (a) a frequency table and (b) histogram. (c) Make a grouped frequency table using intervals of 50-59,60-69,70-79, 80-89, and 90-99. Based on the grouped frequency table, (d) make a histogram and (e) describe the general shape of the distribution. 6. Below are the number of minutes it took each of a group of 34 10-year-olds to do a series of abstract puzzles: 24,83,36,22,81,39,60,62,38,66,38,36,45,20,20,67,41,87,41,82,35,82,28,80, 80,68,40,27,43,80,31,89,83,24. Make (a) a frequency table and (b) a frequency polygon. (c) Make a grouped frequency table using intervals of 20-29,30-39,40-49,50-59,60-69,70-79, and 80-89. Based on the grouped frequency table, (d) make a histogram and (e) describe the general shape of the distribution.
