(a) Make a scatter diagram of the data and visualize the line you think best fits the data. Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill No Solution WebAssign. Graphing Tool (b) Would you say the correlation is low, moderate, or strong? positive or negative? o low and positive O strong and negative o moderate and positive O low and negative o moderate and negative O strong and positive (c) Use a calculator to verify that Ex = 135, Ex² = 6783, Ey = 148, Ey2 = 4690, and Exy = 3045. 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. O Given our value of r, y should tend to decrease as x increases. O Given our value of r, y should tend to increase as x increases. O Given our value of r, y should tend to remain constant as x increases. O Given our value of r, we cannot draw any conclusions for the behavior of y as x increases.
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
![(a) Make a scatter diagram of the data and visualize the line you think
best fits the data.
Graph Layers
After you add an object to the graph you
can use Graph Layers to view and edit its
properties.
Fill
No
Solution
WebAssign. Graphing Tool
(b) Would you say the correlation is low, moderate, or strong? positive
or negative?
o low and positive
O strong and negative
o moderate and positive
O low and negative
o moderate and negative
O strong and positive
(c) Use a calculator to verify that Ex = 135, Ex² = 6783, Ey = 148,
Ey2 = 4690, and Exy = 3045. 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.
O Given our value of r, y should tend to decrease as x increases.
O Given our value of r, y should tend to increase as x increases.
O Given our value of r, y should tend to remain constant as x
increases.
O Given our value of r, we cannot draw any conclusions for the
behavior of y as x increases.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe2efc0a9-34b9-4b59-955d-515bb3d97878%2Fe2228617-3f2d-4852-8a77-3684a0285b1a%2Fm5jg498.png&w=3840&q=75)
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