7 Consider the data set below representing marks of students in a test. 25 45 20 16 18 39 33 51 13 12 51 46 31 19 56 38 46 25 33 16 56 28 69 35 50 25 36 37 22 39 3221 43 1727 38 13 44 54 15 42 50 42 46 37 49 58 40 44 55 40 54 48 40 30 12 42 39 43 47 30 26 40 22 40 38 20 36 12 38 15 28 35 20 30 51 46 20 56 35 45 30 44 42 59 24 2441 21 55 1744 34 12 15 35 12 11 15 22 A Construct a stem-and-leaf plot for the data set; B find the range and mode of the distribution C comment briefly on the shape of the distribution

7 Consider the data set below representing marks of students in a test. 25 45 20 16 18 39 33 51 13 12 51 46 31 19 56 38 46 25 33 16 56 28 69 35 50 25 36 37 22 39 3221 43 1727 38 13 44 54 15 42 50 42 46 37 49 58 40 44 55 40 54 48 40 30 12 42 39 43 47 30 26 40 22 40 38 20 36 12 38 15 28 35 20 30 51 46 20 56 35 45 30 44 42 59 24 2441 21 55 1744 34 12 15 35 12 11 15 22 A Construct a stem-and-leaf plot for the data set; B find the range and mode of the distribution C comment briefly on the shape of the distribution

Name: 7 Consider the data set below representing marks of students ina test
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Description: 7 Consider the data set below representing marks of students ina test.25 45 20 16 18 39 33 51 13 1251 46 31 19 56 38 46 25 33 1656 28 69 35 50 25 36 37 22 393221 43 17 27 38 13 44 54 1542 50 42 46 37 49 58 40 44 5540 54 48 40 30 12 42 39 43 4730 26

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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4
A group conducted a study of the calorie content of different types of beer. The calorie content (calories per 100 ml) for 26 brands of light beer are summarized in the table below. 43 39 25 35 34 19 37 41 30 38 31 27 33 41 39 29 22 41 27 28 39 24 22 36 37 35 (a) Construct a stem-and-leaf display using stems 1, 2, 3, and 4. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Calorie Content 1 2 3 4 Stem: Tens Leaf: Ones (b) Describe the calorie content of light beers. (Select all that apply.) There are no gaps in the data. A typical calorie content is 40 calories per 100 ml. There is a large gap in the data. A typical calorie content is 33 calories per 100 ml. The distribution is negatively skewed, with one peak. The distribution is roughly symmetric. The distribution is positively skewed, with one peak.
6. The following table shows the marks of 12 students in Accounts and' Q.T. . Determine the coefficient of correlation. Marks in 65 40 35 75 65 80 35 20 85 65 55 33 ассоuntancy Marks in Q.T 30 55 68 28 76 25 80 85 2035 45 65
3. A mathematics placement test is given to all entering freshmen at a small college. A student who receives a grade below 35 is denied admission to the regular mathematics course and placed in a remedial class. The placement test scores and the final grades for 20 students who took the regular course were recorded as follows: Placement Test Course Grade | Placement Test | Course Grade 50 53 90 54 35 35 41 80 60 91 61 48 40 56 60 71 55 68 60 71 65 36 40 47 35 11 55 53 60 70 50 68 90 79 65 57 35 59 50 79 (a) Plot a scatter diagram. (b) Find the equation of the regression line to predict course grades from placement test scores. (c) Graph the line on the scatter diagram (d) If 60 is the minimum passing grade, below which placement test score should students in the future be denied admission to this course?
Find the five-number summary of the scores in the Math 130 test pre-sented in Table 4.1, page 112. Draw the boxplot.
7) Students in a class were divided in two batches of 10. One batch was given a quiz in the morning before their lectures and the same quiz was given to the other batch in the afternoon after their lectures. The quiz scores out of 10 are given below. Morning Batch Afternoon Batch Scores Scores 658.5 7 9 55 2.5 | 10| 10| 4.5 |5.5 9.5 6.5 10 8.5 7 8 Use the run test to determine whether the time of the quiz has an effect on the scores. 3
Please help with 1,2,3
Sixteen men and fourteen women in an Introductory Psychology class have taken their midterm exams. Their scores are listed here. (For gender, 1 = male and 2 = female). Student Gender Score Student Gender Score 1 1 85 16 2 89 2 1 53 17 2 73 3 2 92 18 2 91 4 1 70 19 1 76 5 1 76 20 1 75 6 1 93 21 2 89 7 1 90 22 2 71 8 2…
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B. Com. students in a class-test in Statistics. (Marks 100). 34 The following table gives the marks obtained by a batch of 30 Marks obtained Rol No. Roll No. Marks obtained 33 32 55 47 21 50 27 12 68 49 40 17 44 48 62 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 24 33 42 38 45 26 33 44 48 52 30 58 37 38 35 8 12 13 14 15 Find the values of Q1, Q3, D, and Pra 1234 S6 9060 23 1111
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 27 31 29 31 34 23 28 37 33 31 D Actor (years) 67 41 36 42 26 35 46 40 37 39 Họ: Ha year(s) H7: Ha v (Type integers or decimals. Do not round.) year(s) Identify the test statistic. t = (Round to two decimal places as needed.) Identify the P-value, P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? Since the P-value is V the significance level, V the null hypothesis. There sufficient evidence to support the claim that actresses are generally younger when they won the award than actors. b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the…
The following test scores are for two classes that took the same test. (The highest possible score on the test was 60.) Class 1 (24 scores): 37, 46, 54, 55, 15, 55, 44, 55, 37, 26, 52, 44, 31, 23, 44, 52, 41, 41, 30, 50, 41, 41, 41, 41 Class 2 (25 scores): 50, 40, 40, 25, 40, 57, 31, 31, 40, 31, 33, 33, 57, 33, 34, 34, 57, 29, 34, 41, 41, 58, 41, 34, 45 Form a back-to-back stem and leaf plot with one stem. Put the leaves for one class on the right side of the stem and the leaves for the other class on the left side. Record the leaves in increasing order from the stem. Leaf (Class 1) Stem Leaf (Class 2) 3 2 1