(4) The following data examines whether there is a relationship between the number ofabsences in a class and the final grade.1 2 38 9 106994200543 6 1Final Grade (%) 74 60 75 87 92 74 80 82 75 94StudentAbsences4 56 7a. Draw a scatterplot of the data. Use #absences as x and final grade as y. Includeyour scatterplot with your assignment.b. Does there appear to be a relationship? What type of relationship?c. What is the correlation coefficient of this data?

Given: Absences (x) Final Grade (y) 6 74 9 60 4 75 2 87 0 92 5 74 4 80 3 82 6…

Answered: (4) The following data examines whether…

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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The correlation between midterm and final grades for 300 students is 0.620. If 5 points are added to each midterm grade, the new r will be: a. 0.124 b. 0.57 c. 0.62 d. 0.744
A social psychologist proposes that implicit prejudice causes police officers to inadvertently pull over more ethnic minorities. In order to test this theory, the psychologist randomly selects a sample of people from an ethnically diverse city with fairly equal proportions of White, Latino, and Black residents and asks them to report how many times they have been pulled over by the police in the last 10 years (see data below). Latino Black White 5 12 2 4 1 0 11 5 0 9 9 1 2 4 3 7 8 1 3 3 0 10 0 6 2 2 0 11 1 14 5 9 2 5 0 7 1 00 8 5 6 7 4 10 1 сл 2
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams, Hours spent studying 0.5 1 1.5 2 2.5 4 4.5 5 5.5 6 Midterm Grades 63 69 75 78 81 84 90 93 96 99 Draw a scatter plot of the given data. Select a location in the chart to plot a point. Points can be moved by dragging or using the arrow keys. Estimate the correlation in words: positive, neagative, no correlation Calculate the correlation coefficient, r. Round your answer to three decimal places. Hours unspervised 0 1 2 4 5 Overall Grades 100 92 88 84 72 Calculate the correlation coefficient, r. Round your answer to three decimal places. Determine whether the given correlation coefficient is staatically significant at the specified level of significance and sample size. r=0.452 ,a=0.005, n=28
Use a graphing calculator to create a scatter plot and find the line of best fit and the correlation coefficient for the following data. Round to the nearest hundredth. X 2 4 6 8124 10 Part: 0/2 y 2 3 6 7 10 15 19
Please follow and copy the solution given in the example for the answer Thanks.
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Estimate the most likely degree of correlation for the scatterplot Options: a. 0 b. .85 c. -.90 d. -.05
A flight travels daily from Pittsburgh to San Antonio. The following list gives the flight's arrival time (in minutes) relative to the scheduled arrival time for a selection of 10 days. (A negative number means the flight arrived that many minutes early.) -8, 9, -9,-10, 26, 36, -1, 11, 21, 23 Send data to calculator not (a) What is the median of this data set? If your answer. an integer, round your answer to one decimal place. (b) What is the mean of this data set? If your answer is not an integer, round your answer to one decimal place. Ozero modes (c) How many modes does the data set have, and what are their values? Indicate the number of modes by clicking in the appropriate circle, and then indicate the value(s) of the mode(s), if applicable. one mode: 0 two modes: and 5 2 Continue acer esc ! @ 3 $ 4 % 5 6 & 7
r = - 1
A researcher is proposing that exercise makes a person more energized as a result they require less sleep. He carries out a survey on the number of hours of exercise per week and the average hours of sleep needed per night in order to feel well rested. The results are shown in the table (picture) for the 8 participants. a. Sketch a scatter plot for the data, is the relationship linear?b. What is the correlation between the two variables?c. Calculate the coefficient of determination and explain.
Based on the image attached, it shows a scatterplot of daily coffee consumption vs. IQ level. Based on the given scatter diagram, choose the correct statement. a. It is a no correlation. The amount of an individual consumes daily consumption has no correlation with his/her IQ level. b. It is a positive correlation. The more amount of an individual consumes daily consumption, the lower their IQ level to be. c. It is a negative correlation. The more amount of an individual consumes daily consumption, the lower their IQ level to be. d. It is a negative correlation. The more amount of an individual consumes daily consumption, the higher their IQ level to be. e. It is a positive correlation. The more amount of an individual consumes daily consumption, the higher their IQ level to be.

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