7 The following stem-and-leaf plot describes the weekly expenses of asample of secondary school students in Sekolah Menengah Panglima,Selangor.Stemleaf425196.7 8 977839.138101Note: 4|3 means RM4.30Find the first quartile, second quartile and third quartile.6952.

Answered: 7 The following stem-and-leaf plot…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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1. The maximum number of sit-ups completed by the participants in an exercise class after 1 month of the program is given below. Construct a two-stem stem and leaf plot. 24 31 54 62 36 28 55 18 27 80 37 58 32 37 41 55 39 56 42 29 35 35 2. Find the mean, median, 20% trimmed mean, first quartile, and third quartile for the data in question 3. Show your work for credit. 3. A statistics class has 20 female students and 10 male students. Average exams score for the females is 78.5 and the average exam score for the males is 72.1. What is the average exam score of the entire class?
Construct a stem-and-leaf plot for the following. The following data represents the bounced check fee in pesos (in hundreds) for a sample of 50 banks for direct deposit customers who maintain a P5,000 balance.
A sample of wait times in minutes to be seated at two popular restaurants is shown. Use the data and the box-and-whisker plots to compare the data.
12. MS. Pettipiece wants to see if there is correlation between the students overall Data mark (in percent) in his class and the Grade 11 math mark (in percent). The following data was collected and graphed/ Scatter Plot Collection 1 Collection 1 100 Grade11 Data 90- 67 71 60 79 80- 80 93 :- 70- 69 72 74 66 60- 9. 86 79 50 7 86 89 40 78 67 90 91 55 60 65 70 75 80 85 90 95 Grade11 10 63 70 201 10- 11 72 63 12 76 0- 13 70 75 -10- 14 84 86 -20 15 55 43 55 60 65 70 75 80 85 90 95 Grade11 - Data = 0.866Grade11 + 11: r= 0.50 Discuss the correlation between the Data mark and the Grade 11 mark. Make sure to reference the coefficients of correlation and/or determination in your discussion. Residual Data
Construct a stem-and-leaf plot for the following
1. The box and whisker plot shows the ages of people at a restaurant. 6 5 13 21 33 42 10 15 20 25 30 35 40 45 Part A: What percent of people are younger than 33 years old? Part B: The following data points are added to the data set. (6, 21, 45, 60). Which of the data points would be an outlier?
5. Suppose that 25 students in a science class took a test. Using the box-and-whisker plot of the test scores below, answer the following questions. A. Determine whether the statement is true (T) or false (F). Science Test Scores a) The mean of the scores is 81. b) The mean of the scores is 78.6. c) About 50% of the students received a score of 81. d) More than 50% of the students received a score above 73. 54 73 81 90 95 + 40 50 60 70 80 90 100 GFreemathresource.com Answer: a) b) c) d) B. If a student received a score of 10 instead of 54, would it more heavily influence the mean or the median? Мean Median C. If a student received a score of 10 instead of 54, the standard deviation would be most likely: Smaller Larger Little Changed
The box-and-whisker plots below depict the number of books read by 6th and 7th graders over the last year. 6th Graders 7th GradersE 8. 12 14 16 Which statement is supported by the plots? O The range of the number of books read by 6th graders is less than the range of the number of books read by 7th graders. O The mean number of books read by 6th graders is less than the mean number of books read by 7th graders. O The median number of books read by 6th graders is less than the median number of books read by 7th graders. The number of students in the 6th grade is less the number of students of students in the 7th grade.
5. Find the median for the following distribution. Income above Rs 1000 1500 2000 2500 3000 3500 4000 No. of person 80 62 33 16 6. 2
3. The following table gives annual salary (in thousands of dollars) of the mothers and fathers of 10 randomly chosen students at a local elementary school. Salary in Thousands of Dollars Mother 5 102 42 55 48 Father 80 80 25 30 150 54 72 76 81 53 72 84 56 0 90 56 52 50 50 53 46 49 58 75 40 a. Form a box plot displaying the mothers' data and a box plot displaying the fathers' data. b. What percent of the mothers' incomes are less than $50,000? What percent of the fathers' incomes are at least $70,000? c. Are there any outliers in the mothers' incomes? If so, which ones? Explain (using numbers) how you know these are outliers. d. Is a father's income of $90,000 considered unusual? Explain your thinking.
Given the following data: 12, 14, 13, 20, 18, 15, 5, 6 and 19. Construct a box-and-whisker plot for the data set. +++++++ 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 +++-++ 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2l 22 23 +++ 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 一 5 6 10 11 12 13 14 15 16 17 18 19 20 21 22 23
8. The following table gives the winning scores in the Masters golf tournament for the years from 1973 to 2008. Use it (a) to construct a stem and leaf plot, and (b) to find the sample median of the winning scores in these years.

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7 The following stem-and-leaf plot describes the weekly expenses of a sample of secondary school students in Sekolah Menengah Panglima, Selangor. Stem leaf 4 3 5 1 9. 6. 2 5 7 8 9 7 3 5 5 6 7 8. 3 6. 9. 1 3 8. 10 6n5 2.