Data BankHide (correlation = undefinedShow regression lineCreate a scatterplot with at least 8 points where thecorrelation is between 0.5 and 0.7 by clicking and draggingpoints from the Data Bank onto the graph. Enter thecorrelation coefficient displayed in the applet.correlation coefficient:Now add another data point, in the upper-left corner ofthe scatterplot. This causes the correlation coefficientThen click and drag thistopoint down to the lower-left corner of the scatterplot.Take note of this new correlation coefficient and how itchanged when you dragged the point down.

Correlation coefficient is a measure that indicates the strength and direction of association…

Answered: Data Bank Hide correlation undefined…

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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Statistical technique used to determine the degree to which two variables are related is known as a. Regression b. Correlation c. None of these d. Dispersion
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…
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An aerobic exercise instructor remembers the data given in the following table, which shows the recommended maximum exercise heart rates for individuals of the given ages. Age (x years) 20 30 40 50 60 Maximum heart rate 170 168 153 147 136 (y beats per minute) Find the linear correlation coefficient for the data.
Determine if correlation between the two given variables is likely to be positive or negative, or if they are not likely to display a linear relationship. Your daily calorie intake and weight. (a) Positive (b) Negative (c) No correlation
Determine which scatterplot shows the strongest linear correlation. Which graph(s) look like a linear model would be appropriate? Why?Which graph(s) would a linear model not be appropriate? Why?Which graph shows the strongest linear correlation?Draw a line of best fit through the data of the graph you believe has the strongest linear correlation.Construct a residual plot of this data based on the the you drew through the data.
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
Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axes are the same for each diagram. (a) r= 0.523 (b) r= - 0.969 (c) r= 0.025 (d) r= 1 Click the icon to view the scatter diagrams. r= 1 r= 0.523 r= - 0.969 r= 0.025 Drag each of the r-values given above into the appropriate area below. Explanatory Explanatory Explanatory Explanatory Response Response Response Response
Do all Please calculate: Parameters a and b Correlation coefficient Determination coefficient Write correlation equation Visualise data in Scatter chart Provide explanation of results Year Sales, MEUR (Yi) Employees with higher education (Xi) 2010 70 10 2011 90 12 2012 100 15 2013 80 13 2014 110 17 2015 120 20 2016 150 25 2017 200 25 2018 200 25
The correlation coefficient r = -0.95 represents a linear relationship that is...Group of answer choices weak and positive weak and negative moderate and positive moderate and negative strong and positive strong and negative
L4Q6.What correlation can be observed between x and y in the given figure?
Give an example of a correlation study, and identify the independent and dependent variables.

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