b) The table below shows the number of absences in a class and the final exam grade of 7randomly selected students. At 5% level can we say that there is a significant linear relationshipbetween X and Y?Studentnumber of absences (X)final exam grade (Y).1245163395909055708085d) Decision Rulee) Test Statisticsf) Decisiong) Conclusion

d) Given that the level of significance is 0.05 Decision Rule: If p-value ≤ α, then reject the null…

Answered: ) The table below shows the number of…

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 graph below is an ogive of scores on a math test. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Use the graph to approximate the test score that corresponds to the 30th percentile. O A. 9 ОВ. 4 Percentile Ranks of Math Test Scores ОС. 56 100- 90- O D. 50 80- 70- 60- 50- 40- 30- 20- 10- 0- -> O 10 20 30 40 50 60 70 80 90 100 Test Socore (96) Click to select your answer. Percentile
What kind of relationship is depicted in the following graph? 7 2 1 0 2 3 a. A positive linear correlation b. A nonlinear correlation c. No correlation Od. A negative linear correlation 6 9 10
2:23 K On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.889. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. Click the icon to view the critical values table. OA. Yes, since |0.889| is less than the critical value for 30. B. Yes, since 0.889 is greater than the critical value for 30. OC. No, since |0.889 is greater than the critical value for 30. O D. No, since |0.889 is less than the critical value for 30. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. Data table Critical Values for Correlation Coefficient ||| = Print n 3 0.997 4…
Example 5. Find the coefficient of correlation between the heights of brothers and sisters from the following data: Heights of brothers (in cm) : (x) 65 66 67 68 69 70 71 Heights of sisters 67 68 66 69 72 72 69 (in cm) : (y)
Given the graph below, what type of correlation would you predict there is between the variables? CAR PRICE DEPENDING ON AGE Price (dollars) 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000- 4. 10 Age (years) O Positive correlation O Negative correlation O No correlation
The following graph shows the average grade point average for a particular college from 2004 until 2011. Average GPA 3.20 OA OC OD 3.15 3.10 3.05 3.00 2.95 2.90 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Year Which one of the following statements is correct? A) Historically, the Average GPA of the college tends to decrease. B) There appears to be no relationship between Year and Average GPA. C) Year is the dependent variable in the graph. D) Average GPA is the dependent variable in the graph.
Please help me answer the questions about correlation according to the graph. So would it be linear, strong, positive, or no association? Or negative and weak?
Give an example of two variables that have a positive linear correlation. Give an example of two variables that have a negative linear correlation. Give an example of two variables that have no correlation. Below is the height in inches and weight in pounds of eleven individuals Height, x 62 63 66 68 70 72 73 74 74 75 75 Weight, y 195 190 250 220 250 255 260 275 280 295 300 x = 65 inches x = 69 inches x = 71 inches
The scatter plot shows a set of data for the variables x and y. 200 180 160 140 120 100 80 60 40 20 10 10 20 30 40 50 What type of association is shown in the scatter plot? a weak, negative association C a strong, negative association B. a weak, positive association D. a strong, positive association
Which of the following are attributes of correlation? Ocorrelation is bounded by +1 and -1 correlation is a measure of linear dependency a correlation of 0 does not mean that 2 variables are independent independent variables have 0 correlation
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
find t reject or fail to reject

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) The table below shows the number of absences in a class and the final exam grade of 7 randomly selected students. At 5% level can we say that there is a significant linear relation between X and Y? Student 2 3 4 5 number of absences (X) 6. 4 final exam grade (Y) 95 90 90 55 70 80