QUESTION 23What degree of correlation is depicted by the plot below?-100-r=-1-120-140--160--180-200150175200225250QA negative perfect correlationOB. positive moderate corelationC.negative moderate correlationClick Save and Submit to sape and subnit. Click Sare AllAnners to sate all anncere.TESHISAD98PYERK

The correlation is used to measure the strength of association between the two numerical variables.…

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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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use the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? FORECAST AND ACTUAL TEMPERATURES The table lists actual high temperatures and the high temperatures that were previously forecasted for these same days. The table includes data for ten different days near the author’s home. What does the result suggest about the accuracy of five-day predicted high temperatures?
Construct a scatter plot for the given data. Determine whether there is a positive correlation, negative correlation, or no linear correlation. x-5-34 1 |-1-202 3-4 y11 6 |-6-13 4 1-4-58
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Using the chart as a guide, what value of the linear correlation coefficient (r) makes sense according to how the data is trending? SAT score_GPA scatterplot.pdf
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Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 32 75 y 40 35 30 26 18 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative moderate and negative strong and positive low and negative low and positive moderate and positive (c) Use a calculator to verify that Σx = 132, Σx2 = 6932, Σy = 149, Σy2 = 4725, and Σxy = 2997. Compute r. (Round your answer to three decimal places.)r = As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to…
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
Does the scatter plot show a positive correlation? If so, explain. If not, what kind of scatter plot correlation does it show?
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…
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
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
A correlation coefficient measures the strength of the linear relationship between two variables Select one: True False Check The closer the correlation coefficient is to -1 the more spread out the data set is. Select one: True False Check tv

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What degree of correlation is depicted by the plot below? -100 -120 -140 -160- 180 -200 200 225 250 150 175 OA negative perfect correlation OB positive moderate corelation C. negative moderate correlation