Statistics Question
Part 1 (15 Points)
For each of the following 5 problems: (a) find the standard deviation; (b) make a Cumulative frequency table; (c) draw a histogram, with frequency polygon drawn; (d) a frequency distribution graph (ogive); (e) describe the general shape of the frequency distribution polygon; (f) describe the general shape of the ogive;
Problem 1:
Several LAVC students were asked how many hours they spent in the library studying last weekend. Here are the 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
Problem 2:
Several chefs were given a measure of sensitivity to smell while attending a national conference. Below are the scores:
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
Problem 3:
Listed below are the number of minutes it took each of a group of ten-year-olds to do a series of 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
Problem 4:
The principle of a particular elementary school reported the number of children in each of the following classes:
24, 20, 35, 25, 25, 22, 26, 28, 38, 15, 25, 21, 24, 25, 25, 24, 25, 20, 32, 25, 22, 26, 26, 28, 24, 22, 26, 21, 25, 24
Problem 5:
An Industrial Psychologist asked workers in an engineering firm to rate their job satisfaction on a 5-point scale from 1=very unsatisfied to 5=very satisfied. The ratings are as follows:
3,2,3,4,1,3,3,4,5,2,3,5,2,3,3,4,1,3,2,4
Part 2 (5 Points)
For Part 2, you need to used the data you generated for last week’s homework. Remember, we called the date you generated as SGDS.
For SGDS, (a) Make a Cumulative Frequency Table; (b) draw a histogram, with frequency polygon drawn; (c) a frequency distribution graph (ogive); (d) describe the general shape of the frequency distribution polygon; (e) describe the general shape of the ogive;
