Let's say we find a linear relationship between two variables such as studying and one's grades....
Let's say we find a linear relationship between two
variables such as studying and one's grades. Could we claim
cause-effect? Why or why not?
Homework Answers
No we cannot claim cause - effect
if we find a linear relationship between two variables
such as studying and one's grades.
Regression deals with dependence amongst variables within a model.
But it cannot always imply causation.
It means there is no cause and effect reaction on regression.
In short, we conclude that a statistical relationship does not imply causation.
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Let's say we find a linear relationship between two
variables such as studying and one's grades....
The data shown in the following scatterplot show a very nice relationship between the two variables....
The data shown in the following scatterplot show a very nice relationship between the two variables. However, the correlation here is 0.03, very close to zero. Explain why we can have a nice relationship between two quantitative variables and yet have a correlation of O 8 10 14 O There are no outliers but there are influential observations that cause the value of r to be near 0. 0 There are strong outliers that cause the value of to be...
When we say that the relationship between two variables may be caused by a third variable,...
When we say that the relationship between two variables may be caused by a third variable, we are d specifying what the third variable is. employing faulty reasoning O specifying that there can be only three interpretations ar O often not specifying what that third variable is.
If we find that there is a linear correlation between the concentration of carbon dioxide in...
If we find that there is a linear correlation between the concentration of carbon dioxide in our atmosphere and the global temperature, does that indicate that changes in the concentration of carbon dioxide cause changes in the global Choose the correct answer below O A No. The presence of a linear correlation between two variables does not imply that one of the variables is the cause of the other variable OB. Yes. The presence of a linear correlation between two...
If we find that there is a linear correlation between the concentration of carbon dioxide in...
If we find that there is a linear correlation between the concentration of carbon dioxide in our atmosphere and the global temperature, does that indicate that changes in the concentration of carbon dioxide cause changes in the global temperature? Choose the correct answer below. O A. No. The presence of a linear correlation between two variables does not imply that one of the variables is the cause of the other variable. OB. Yes. The presence of a linear correlation between...
When investigating the relationship between two quantitative variables, we sometimes transform one of the variables in...
When investigating the relationship between two quantitative variables, we sometimes transform one of the variables in order to: a) change a linear relationship into a nonlinear one. b) conserve space. c) more accurately portray the variable. d) make the data look more Normal.
The concept of statistics where we look at the amount and type of relationship that exists...
The concept of statistics where we look at the amount and type of relationship that exists between two variables is the correlation. We can consider whether or how two variables are related to each other and how that relationship functions. For example, if you think that the more you study, the higher your grades will be, you are using correlation and prediction. You may have observed that as the number of hours you spend studying increases, so do your overall...
Which of the following statements is correct? a. The stronger the linear relationship between two variables,...
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Discuss two data characteristics that could invalidate the use of linear correlation and regression to show the relationship between two ratio scale variables.
Discuss two data characteristics that could invalidate the use of linear correlation and regression to show the relationship between two ratio scale variables.
22. The coefficient of determination explains the relationship between two variables the proportion of variance in...
22. The coefficient of determination explains the relationship between two variables the proportion of variance in one variable accounted for by another variable and vice versa the cause–effect relationship between two variables all of the above 23. The ____________ assumption is met if, in a scatterplot, the distance from the points to the line is relatively equal all along the line. a. homoscedasticity b. linearity c. curvilinearity d. heterolinearity 24. The strength of a relationship between two variables in correlation...
Question 12 titled folde Determine the type of relationship between the two variables shown in the...
Question 12 titled folde Determine the type of relationship between the two variables shown in the figure below: we 320 Perfect negative linear relationship Nonlinear relationship Perfect positive linear relationship Negative linear relationship swe 245 Moving to another question wives response Question to
The data shown in the following scatterplot show a very nice relationship between the two variables. However, the correlation here is 0.03, very close to zero. Explain why we can have a nice relationship between two quantitative variables and yet have a correlation of O 8 10 14 O There are no outliers but there are influential observations that cause the value of r to be near 0. 0 There are strong outliers that cause the value of to be...
When we say that the relationship between two variables may be caused by a third variable, we are d specifying what the third variable is. employing faulty reasoning O specifying that there can be only three interpretations ar O often not specifying what that third variable is.
If we find that there is a linear correlation between the concentration of carbon dioxide in our atmosphere and the global temperature, does that indicate that changes in the concentration of carbon dioxide cause changes in the global Choose the correct answer below O A No. The presence of a linear correlation between two variables does not imply that one of the variables is the cause of the other variable OB. Yes. The presence of a linear correlation between two...
If we find that there is a linear correlation between the concentration of carbon dioxide in our atmosphere and the global temperature, does that indicate that changes in the concentration of carbon dioxide cause changes in the global temperature? Choose the correct answer below. O A. No. The presence of a linear correlation between two variables does not imply that one of the variables is the cause of the other variable. OB. Yes. The presence of a linear correlation between...
Question 12 titled folde Determine the type of relationship between the two variables shown in the figure below: we 320 Perfect negative linear relationship Nonlinear relationship Perfect positive linear relationship Negative linear relationship swe 245 Moving to another question wives response Question to
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