1. Given the following scores in a Psychology test , make a frequency table.Raw scores47564228565582785055415657386252666572374742524754485247443953484254626848564260Class limitsClassfRF%CFboundaries

Solution-: We prepare the table for given raw data: Class Limits Class Boundaries f x R.F.%…

Answered: 1. Given the following scores in a…

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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2. Here are the scores on the first exam in an introductory statistics course for 30 students in one statistics course: 57 59 61 65 68 70 70 73 73 75 75 75 78 80 80 80 82 82 83 85 85 87 90 90 91 92 92 94 94 98 Use these data to make a stemplot. Use the stemplot to describe the distribution of the first-exam scores for this course.
Here is a set of sample data. 13 78 61 53 30 96 37 83 56 35 90 31 39 29 18 45 91 59 87 100 68 17 10 Base on the data above, identify the 5 number summary , , , , ,
Students were asked what grades they usually get in school. For twelfth-grade students who responded to this question and the question about how often they wear seatbelts when driving, a summary of frequency counts for combinations of responses to the two questions is as follows. WearsSeatbelt Usual School Grades A and B C D and F Total Never 55 40 17 112 Rarely 129 95 21 245 Sometimes 168 109 9 286 Most times 290 129 25 444 Always 1,059 305 50 1,414 Total 1,701 678 122 2,501 (a) The total number of students in the table is 2,501. What percentage of these 2,501 students said that they usually get A's and B's in school? (Round your answer to one decimal place.) % (b) What percentage of the 1,701 students who said that they usually get A's and B's said that they always wear a seatbelt when driving? (Round your answer to one decimal place.) % (c) What percentage of the 678 students who said that they usually get C's said that they always wear a…
Listed to the right are the selling prices (in thousands of dollars) for a sample of 19 lakeside lots in Pinnacle Peak, a vacation home community in the Blue Ridge mountains. 86 61 148 81 39 142 140 65 28 85 90 92 25 50 85 85 82 120 137 Determine the following: a. the first quartile b. the third quartile c. the median
Descriptive Statistics.For the given data:4 8 18 20 21 22 23 24 25 26 27 28 29 30 30 31 31 32 32 33 33 34 35 36 37 38 39 47 53 a. Make a Frequency Diagram with 7 classes.b. Draw the histogram.
Given the following frequency distribution table for a set of data about the weights of rainbow trout (in pounds) caught by all visitors at a lake on a Saturday afternoon, construct a histogram that accurately summarizes the data. Weight (in pounds) Frequency 4.5-6.5 5 6.5-8.5 2 8.5-10.5 5 10.5-12.5 6 12.5-14.5 2 14.5-16.5 1 Create the corresponding histogram to represent this data below. Drag the dots on the top of the histogram to create the chart.
Do question 1
Here is a set of sample data. 83 89 32 94 18 38 74 30 79 21 84 99 88 25 72 46 93 49 5 7 28 82 52 47 19 85 58 22 Base on the data above, identify the 5 number summary , , , ,
Here is a set of sample data. 96 52 19 97 98 67 93 45 57 41 89 60 66 5 42 32 71 73 90 33 53 35 24 85 9 75 Base on the data above, identify the 5 number summary , , , ,
Let’s talk about grades. Below is a collection of grades randomly selected from the students taking a statistics final exam administered to all students taking statistics at one college in one particular year. 69 70 70 72 73 73 76 77 77 7878 79 80 80 8081 82 82 83 8488 89 92 93 94 1. The 25 student scores above would represent... A.a sample statistic B.a parameter C.a census D.a population E.a sample 2.The professor wants to analyze the results of these grades. Find the median grade for the students. 3.Assume that the distribution is approximately normal with a mean and standard deviation of 80 and 7 respectively. What is the probability that a student would score higher than a 90 on the final? 4.
Let x be the percentage of 16- to 19-year-olds not in school and not high school graduates. Let y be the reported violent crimes per 1000 residents. Six small cities in Arkansas (Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville) reported the following information about x and y. x 24.2 18.6 17.8 14.9 19.0 17.5 y 13.0 4.6 8.8 1.3 0.8 3.6 Complete parts (a) through (e), given Σx = 112, Σy = 32.1, Σx2 = 2137.7, Σy2 = 282.89, Σxy = 654.37, and r ≈ 0.763. (b) Verify the given sums Σx, Σy, Σx2, Σy2, Σxy, and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.) Σx = Σy = Σx2 = Σy2 = Σxy = r = (c) Find x, and y. Then find the equation of the least-squares line = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) x = y = = + x

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1. Given the following scores in a Psychology test , make a frequency table. Raw scores 47 56 42 28 56 55 82 78 50 55 41 56 57 38 62 52 66 65 72 37 47 42 52 47 54 48 52 47 44 39 53 48 42 54 62 68 48 56 42 60 Class limits Class f RF% CF boundaries