Real-life ProblemApply the concept of Pearson "r" Correlation, presentyour ANSWER with COMPLETE SOLUTION to this problem.a. Students of a certain section took the assessments inStatistics and Algebra. Their professor randomlyselected 13 students to determine the relationshipbetween the two assessments. Describe therelationship between the two assessments by usingthe assessment scores of the students below.StudentStatistics Assessment Score Algebra Assessment ScoreStudent A1919Student B1818Student C1715Student D170Student E1313Student F1212Student G1210Student H118Student I108Student J87Student K66Student L33Student M20

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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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Suppose two negatively associated variables have a coefficient of determination 2 of 63%. Find the value of the correlation. Explain your reasoning. d End
Blood pressure measurements consist of two numbers, the systolic pressure and the diastolic pressure. Subjects taking an experimental blood pressure medicine had the following measurements: Systolic 134 115 113 123 119 118 Diastolic 72 83 77 77 69 75 Compute the correlation coefficient. Round your answer to three decimal places. Write only a number as your answer. Your Answer:
The scenario A professor wanted to learn more about the students at her university with regards to whether they prefer in-person or online classes. She randomly sent out surveys to students at the university . Of the students that responded, % prefer taking online classes. The questions Use the information from the scenario to answer the following: What is the population that this study is trying to get information about? What is the variable used for the study? What type of variable is the variable in question 2? What is the sample statistic for this study? What is the parameter of interest for this study? (the population parameter they are trying to gather information about)
Applying the Concepts and SkillsHeight and Score. A random sample of 10 students was taken from an introductory statistics class. The following data were obtained, where x denotes height, in inches, and y denotes score on the final exam. x 71 68 71 65 66 68 68 64 62 y 87 96 66 71 71 55 83 67 86 a. What sort of value of r would you expect to find for these data? Explain your answer.b. Compute r.
Graph a Histogram based on the data. How many sports have you played? Male vs Female 0 Sports: Male= 0, Female=21 Sport: Male= 5, Female=32 Sports: Male= 3, Female=103 Sports: Male= 5, Female=34 Sports: Male= 3, Female=25 Sports: Male= 4, Female=0
Question Help The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are shown in the attached data table with a sample correlation coefficient r of 0.910. Remove the data entry for the man who is 51 years old and has a systolic blood pressure of 200 millimeters of mercury from the data set and find the new correlation coefficient. Describe how this affects the correlation coefficient r. Use technology. Click the icon to view the data set. The new correlation coefficient r going from 0.910 to Data Table (Round to three decimal places as needed.) Age, x Systolic blood pressure, y 110 16 121 26 39 144 130 45 200 51 183 63 Loc 69 199 Bro 130 32 175 58 24 118 Print Done Enter your answer in the answer box. AdChoices PAGCS DEC O étv 13 MacBook Pro DD DII F6 F9 F2 F10 F12 F3 F8 F11 F5 F7 F1 F4 %23 $4 4 & 5. 9. 6. 8 0 utitam
If the Correlation Coefficient (r) between two variable was calculated to be 0.7898, what percent (%) of the variation of the dependent variable is due to the variation of the independent variable? Group of answer choices 103.1% 33.1% 62.4% 94.0%
ASSESSMENT Direction: Read, analyze and answer the following problems below. Show all necessary solutions. 1. The data below show the age and systolic blood pressure of six randomly selected subjects. Compute for the correlation coefficient and interpret the results. Age (x) Pressure (y) 43 48 56 61 67 70 128 120 135 143 141 152
In this problem, we explore the effect on the mean, median, and mode of adding the same number to each data value. Consider the data set 2, 2, 3, 6, 10. (a) Compute the mode, median, and mean. (Enter your answers to one decimal place.)mode median mean (b) Add 7 to each of the data values. Compute the mode, median, and mean. (Enter your answers to one decimal place.)mode median mean (c) Compare the results of parts (a) and (b). In general, how do you think the mode, median, and mean are affected when the same constant is added to each data value in a set? -Adding the same constant c to each data value results in the mode, median, and mean decreasing by c units. -Adding the same constant c to each data value results in the mode, median, and mean remaining the same. -Adding the same constant c to each data value results in the mode, median, and mean increasing by c units. -There is no distinct pattern when the same constant is added to each data value in a set.
A second-grade teacher wants to compare scores on a reading assessment at the beginning of the year to scores on the same assessment at the end of the year. There are 28 in the class, and all students take both of the assessments. What is the degrees of freedom value for the paired-samples t test? a. 54 b. 55 c. 28 d. 27
P QUESTION 8 A data set of 51 distinct values had the following mean and median: mean = 200 and median = 175. The largest value of the data set was 500. Later it was found that this incorrectly. The correct value is 255. What is the effect on the median and mean if the correction is made? O a. The mean would remain the same while the median would decrease. O b. Both the mean and median would decrease. O c. Both the mean and median would remain the same. Od. The mean would decrease while the median would remain the same. QUESTION 9 12) The Department of Education reported the following ordered data on percentages of bachelor's degree holders in 50 states in the USA during 2020 18 17 18 18 19 20 20 20 21 21 21 21 22 22 22 22 22 22 23 23 24 24 24 24 24 24 24 24 25 26 26 26 26 26 26 27 27 27 27 27 28 28 29 31 31 32 32 34 35 38 Click Save and Submit to save and submit. Click Save All Answers to save all answers. 74°F Sunny H a r O
es During one year, the numbers of motorcycle accidents in a certain country were tabulated by day of the week for built-up roads and non-built-up roads. The data are shown in the table below. Complete parts (a) and (b) below. Click the icon to view the number of motorcycle accidents for different road types. (...) a. Without doing any calculations, make an educated guess at which of the two data sets, built-up or non-built-up, has the greater variation. The data set has greater variation, because the data set b. Find the range and sample standard deviation of each of the two data sets. Compare your results here to the educated guess that you made in part (a). Find the range of the two data sets. ce The range of accidents on built-up roads is burc The range of accidents on non-built-up roads is. (Type whole numbers.) Find the sample standard deviation of the two data sets. ons Time Remaining: 01:42:44 Next on To Statcrunch 70°F Sunny Et e here to search

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