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Answered: K Based on the scatterplot, select the…

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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Refer to the correlation table for this question, The data come from Wave 5 of the Arab Barometer survey in Kuwait and were collected in 2019. In this analysis, we see the correlation between age and years of education (Pearson's R= -0.2729) with the p-value (0.0000) below. Explain what a correlation coefficient is and interpret the one you see here. edu_ye~s age edu_years 1.0000 age -0.2729 1.0000 0.0000
For each pair of quantities, decide if the correlation coefficient would be close to 1, close to -1, or not be close to 1 or -1. Part: 0/4 Part 1 of 4 (a) The number of hours a student spends studying and the score on that student's exam. The correlation coefficient would be close to 1 Part: 1/4 Part 2 of 4 Part: 2/4 X (b) The number of hours a student spends studying and the number of letters in that student's name. The correlation coefficient would be close to -1 Part 3 of 4 X Ś X Ś (c) The number of hours an overweight person spends exercising and that person's weight. The correlation coefficient would be close to 1 5
The line of best fit and the correlation coefficient are calculated for a set of data. The value of the correlation coefficient is r=0.10. What is the strength and type of the correlation for this data? a) weak and positive b) strong and negative c) strong and positive d) weak and negative
Which of the following is the equation of the relationship between the predictor variable (x) and the response variable (y)? A y = 25.707 + 0.9887xB y = 29.796 + 0.5897xC y = 25.707 + 0.5897xD y = 29.796 + 0.9887x
If the correlation coefficient r is equal to 0.585, find the coefficient if determination and the coefficient of no determination
Two items R and S belong to one test of numerical ability. Item R is passed by 50 and failed by 40 students in a group of 90 stu- dents. Item S is passed by 60 and failed by 30 students in the same sample. Find the correlation between R and S.
Plot the scatter plot defined by the points on the left. Then match it to the correct correlation value. {(1, 3), (1, 8), (5, 9), (8, 3), (8, 8)} {(1, 4), (3, 3), (5, 7), (7, 5), (9, 8)} r = 0.03 r = -1
A correlation value of -0.92 is positive and strong positive and weak positive negative and strong
urce For a data set of chest sizes (distance around chest in inches) and weights (pounds) of eleven anesthetized bears that were measured, the linear correlation coefficient is r=0.861. Use the table available below to find the critical values of r. Based on a comparison of the linear correlation coefficient r and the critical values, what do you conclude about a linear correlation? Click the icon to view the table of critical values of r. pe here to search Table of Critical Values of r Number of Pairs of Data n 4 5 6 7 8 9 10 11 12 Print Et Critical Value of r 0.950 0.878 0.811 0.754 0.707 0.666 0.632 0.602 0.576 Done 99+ - X 3 + C More Clear all Check answer 82°F & 01
For the data below, the Pearson correlation coefficient between y and x^2 isA. 0.913B. 0.985C. 0.990D. 0.873

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K Based on the scatterplot, select the most likely value of the linear correlation coefficient r. OA. 0 О в. -0.5 OC. -1 OD. 1 Time Remaining: 01:54:16 Next