2622 Scatter Plots Best Transformation
How to find the best transformation for a scatter plot
Questions and Answers
- 1.
Write text here
- 2.
Load data set 111. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
A. X squaredExplanation
The transformation that has the highest correlation coefficient is x squared. This means that when the data set is transformed by squaring the x-values, it shows the strongest linear relationship with the y-values. The correlation coefficient measures the strength and direction of the linear relationship between two variables, with values ranging from -1 to 1. A correlation coefficient of 1 indicates a perfect positive linear relationship, meaning that as one variable increases, the other also increases in a consistent manner. Therefore, squaring the x-values in this data set results in the highest correlation coefficient.Rate this question:
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- 3.
Load data set 112. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
B. Y squaredExplanation
The transformation with the highest correlation coefficient is "y squared". This means that when we square the values of the y variable, it shows the strongest correlation with the other variables in the dataset. The squared transformation can help to capture non-linear relationships between variables and may be useful in cases where the relationship between y and the other variables is not linear.Rate this question:
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- 4.
Load data set 121. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
B. Y squaredExplanation
The transformation with the highest correlation coefficient is "y squared." This means that the dependent variable, y, is squared. The correlation coefficient measures the strength and direction of the linear relationship between two variables. By squaring y, we are potentially capturing a stronger relationship between the variables, resulting in a higher correlation coefficient.Rate this question:
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- 5.
Load data set 122. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
E. Log xExplanation
The transformation with the highest correlation coefficient is "log x." This means that taking the logarithm of the x values in the data set will result in the highest correlation coefficient when compared to the y values. This suggests that there is a strong relationship between the logarithm of the x values and the y values in the data set.Rate this question:
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- 6.
Load data set 123.Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
C. 1/xExplanation
The transformation 1/x has the highest correlation coefficient because it transforms the data in a way that maximizes the correlation between the variables. This transformation is commonly used when dealing with data that has a non-linear relationship, as it can help to linearize the relationship and improve the correlation. By taking the reciprocal of each x value, the resulting values will be larger for smaller x values and smaller for larger x values, which can help to better capture the relationship between the variables.Rate this question:
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- 7.
Load data set 131. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
E. Log xExplanation
The transformation with the highest correlation coefficient is "log x". This means that taking the logarithm of the x-values in the data set has the strongest positive linear relationship with the y-values. The logarithm transformation can help to linearize data that follows an exponential growth pattern, making it easier to analyze and interpret the relationship between the variables.Rate this question:
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- 8.
Load data set 132. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
E. Log xExplanation
The transformation "log x" has the highest correlation coefficient. This means that when the data set 132 is transformed using the logarithm function on the x-values, it will result in a higher correlation coefficient compared to the other transformations listed.Rate this question:
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- 9.
Load data set 133. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
E. Log xExplanation
The transformation with the highest correlation coefficient is "log x". This means that taking the logarithm of the variable x will result in a stronger correlation with the other variables in the dataset compared to the other transformations listed.Rate this question:
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- 10.
Load data set 141. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
A. X squaredExplanation
The transformation with the highest correlation coefficient is x squared. This means that when the data set is transformed by squaring the x values, it will have the strongest linear relationship with the y values compared to the other transformations listed.Rate this question:
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- 11.
Load data set 143. Which transformation has the highest correlation coefficient.
- A.
X squared
- B.
Y squared
- C.
1/x
- D.
1/y
- E.
Log x
- F.
Log y
Correct Answer
F. Log yExplanation
The transformation "log y" has the highest correlation coefficient. This means that when the dependent variable (y) is transformed using the logarithm function, it shows a stronger linear relationship with the independent variable(s) in the data set 143 compared to other transformations such as x squared, y squared, 1/x, 1/y, or log x.Rate this question:
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- 12.
From the data above, what is the correlation coefficient for the log x transformation? (4 decimal places)
Correct Answer
0.8814Explanation
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient for the log x transformation is 0.8814. This suggests a strong positive linear relationship between the variables. The value of 0.8814 indicates that as the log x value increases, the corresponding y value also tends to increase.Rate this question:
- 13.
From the data above, what is the correlation coefficient for the reciprocal x transformation? (4 decimal places)
Correct Answer
-0.6852Explanation
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient for the reciprocal x transformation is -0.6852. This means that there is a moderate negative linear relationship between the reciprocal of x and the other variable. As the value of the reciprocal of x increases, the other variable tends to decrease. The negative sign indicates the direction of the relationship, while the value of -0.6852 indicates the strength, with values closer to -1 indicating a stronger negative relationship.Rate this question:
- 14.
From the data above, what is the correlation coefficient for the log y transformation? (4 decimal places)
Correct Answer
-0.9663Explanation
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient for the log y transformation is -0.9663. This indicates a strong negative linear relationship between the log y values and the other variable. A value of -1 would indicate a perfect negative linear relationship, while a value of 0 would indicate no linear relationship. Therefore, the given correlation coefficient suggests a strong negative linear relationship between the log y values and the other variable.Rate this question:
- 15.
From the data above, what is the correlation coefficient for the reciprocal y transformation? (4 decimal places)
Correct Answer
-0.8669Explanation
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient for the reciprocal y transformation is -0.8669. This means that there is a strong negative linear relationship between the reciprocal of y and the other variable. As one variable increases, the other variable decreases, and vice versa. The value of -0.8669 indicates a strong negative correlation.Rate this question:
- 16.
From the data above, what is the correlation coefficient for the log x transformation? (4 decimal places)
Correct Answer
-0.9775Explanation
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient for the log x transformation is -0.9775. This indicates a strong negative linear relationship between the log x values and another variable. The value of -0.9775 suggests that as the log x values increase, the other variable tends to decrease.Rate this question:
- 17.
From the data above, what is the correlation coefficient for the reciprocal x transformation? (4 decimal places)
Correct Answer
0.9660Explanation
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient for the reciprocal x transformation is 0.9660. This means that there is a strong positive linear relationship between the reciprocal of x and the other variable. The value of 0.9660 indicates that as the reciprocal of x increases, the other variable also tends to increase.Rate this question:
- 18.
The most accurate way to determine the best transformation is to :
- A.
Compare the two transformed scatter plots
- B.
Compare the two residual plots
- C.
Compare the Coefficient of Determination
- D.
Compare the correlation coefficients
- E.
Toss a coin
Correct Answer
D. Compare the correlation coefficientsExplanation
To determine the best transformation, comparing the correlation coefficients is the most accurate way. Correlation coefficient measures the strength and direction of the linear relationship between two variables. By comparing the correlation coefficients of the transformed scatter plots, we can assess the extent to which the transformation improves the correlation between the variables. A higher correlation coefficient indicates a stronger relationship, suggesting that the transformation is more effective in capturing the underlying patterns in the data. Therefore, comparing the correlation coefficients helps in identifying the best transformation.Rate this question:
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- 19.
The best way to determine the correct quadrant is :
- A.
By observing the scatter plot
- B.
By observing the residual plots
- C.
By observing the a values
- D.
By observing the correlation coefficent
- E.
By dancing with pixies
Correct Answer
A. By observing the scatter plotExplanation
The best way to determine the correct quadrant is by observing the scatter plot. A scatter plot is a graph that displays the relationship between two variables, usually represented by dots on the graph. By examining the distribution and pattern of these dots, one can determine the quadrant in which the data points are located. This method allows for a visual understanding of the data and can provide insights into the relationship between the variables being analyzed.Rate this question:
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- 20.
The best way to tell if a transformation is required is :
- A.
By observing the scatter plot
- B.
By observing the residual plot
- C.
By observing the b values
- D.
By observing the correlation coefficent
- E.
By compass
Correct Answer
B. By observing the residual plotExplanation
The best way to tell if a transformation is required is by observing the residual plot. The residual plot shows the difference between the observed values and the predicted values. If the plot shows a pattern or if the residuals are not randomly distributed around zero, it suggests that a transformation may be necessary to improve the model's fit. This is because a good model should have residuals that are randomly scattered around zero, indicating that the model captures the underlying relationship between the variables accurately.Rate this question:
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- 21.
A residual plot shows a clear pattern. This means :
- A.
The scatter plot is linear
- B.
The scatter plot is non-linear
- C.
One of our six transformations will linearise the scatter plot
- D.
One of our six transformations may linearise the scatter plot
- E.
The scatter plot is doomed
Correct Answer(s)
B. The scatter plot is non-linear
D. One of our six transformations may linearise the scatter plotExplanation
The given answer suggests that if a residual plot shows a clear pattern, it indicates that the scatter plot is non-linear. However, it also suggests that one of the six transformations may be able to linearize the scatter plot. This means that although the current scatter plot is non-linear, there is a possibility of transforming the data in a way that can make it linear. Therefore, the answer implies that the scatter plot is non-linear but there is a chance to make it linear through transformations.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 20, 2014Quiz Created by
Anthony Nunan
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