32 Chapter 2 Summarizing Data: Listing and Grouping 2.3 The following are the grades that 50...
Following are the numbers of years of service of all 55 justices of the United States Supreme Court who were appointed from the years 1900 to 2002. The data includes the nine justices who were members of the court in 2002 and all other appointees since 1900. 2.30 19 3 15 5 23 16 16 8 36 16 15 9 33 27 1 23 16 26 16 12 31 16 6 3 14 5 11 10 15 134 10 26...
Following are the numbers of years of service of all 55 justices of the United States Supreme Court who were appointed from the years 1900 to 2002. The data includes the nine justices who were members of the court in 2002 and all other appointees .30 since 1900. 29 5 23 16 16 19 8 36 16 15 3 15 9 33 27 4 16 5 5 21 5 7 1 23 16 26 16 12 31 16 5 11...
A statistics instructor recorded the grades of his students on the final exam. The grades are: 65, 72, 85, 92, 60, 52, 75, 79, 80, 89, 50, 59, 95, 99, 89, 77, 62, 65, 67, 73, 85, 23, 89, 94, 97 a. Construct a stem-and-leaf display. b. Describe the shape of the distribution. c. Deterinine the mode and median of these scores. d. What percentage of the students passed (at least a 70).
13) The following data represent annual salaries, in thousands of dollars, for 35 employees of a small company. S4 55 55 57 57 59 60 65 65 65 66 68 68 69 69 70 70 70 75 75 75 75 77 82 82 82 88 89 89 91 91 97 98 98 98 (a) (15 pts) Complete the Frequency/Relative Frequency/Cumulative Frequency table below. Fractional values are acceptable. Class Frequency Relative Frequency Cumulative Frequency 54 62 63-71 72-80 81-89 90-98 (2pts)...
The following data represent glucose blood levels (mg/100 ml) after a 12-hour fast for a random sample of 70 women (Reference American Journal of Clinical Nutrition, Vol. 19, pp. 345-351) 45 668) 71 75 64 59 59 75 82 B0 81 85 77 82 90 87 72 70 69 83 71 87 69 81 76 96 83 67 94 101 94 89 94 73 99 93 85 83 90 78 80 85 83 84 74 81 70 65 89 70...
The given data is the grades for people in this class. The goal here is to determine the factors that effect student's Grade in the class. 4) Find the mean and median for the men's and the women's Quizzes. Gender Men Women 5) Test the claim that the majority of students at this class are women. F M F F M F F F F M M F F F M F F F F M M F F M...
The following scores represent the final examination grades for an elementary statistics course: 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65 92 85 55 76 52 10 64 75 78 25 80 98 81 67 41 71 83 54 64 72 88 62 74 43 60 78 89 76 84 48 84 90 15 79 34 67 17 82 69 74 63 80 85 61 Calculate: Stem and leaf Relative frequency histogram Cumulative frequency Sample Mean Sample Median Mode Variance Standard deviation
An article of the American Journal of Clinical Pathology, by Metz et al. (A-4) published the comparison of three methods to determine the percentage of dysmorphic erythrocytes in the urine. They obtained the following results when using the A (X) and B (Y) methods in 75 urine samples. Draw a scatter diagram and obtain the regression equation and graph it on the diagram. X Y X Y X Y X Y 0 0 20 16 65 55 89 81 0 ...
02 The following scores represent the final examination grades for an elementary statistics course: 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65 92 85 55 76 52 10 64 75 78 25 80 98 81 67 41 71 83 54 64 72 88 62 74 43 60 78 89 76 84 48 84 90 15 79 34 67 17 82 69 74 63 80 85 61 Calculate: . Stem and leaf ....
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...