2622 Scatter Plots Best Transformation

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| By Anthony Nunan
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Anthony Nunan
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  • 1/21 Questions

    Load data set 111. Which transformation has the highest correlation coefficient.

    • X squared
    • Y squared
    • 1/x
    • 1/y
    • Log x
    • Log y
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2622 Scatter Plots Best Transformation - Quiz
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How to find the best transformation for a scatter plot

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  • 2. 

    Load data set 112. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Y squared
    Explanation
    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.

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  • 3. 

    Load data set 121. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Y squared
    Explanation
    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.

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  • 4. 

    Load data set 131. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Log x
    Explanation
    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.

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  • 5. 

    Load data set 133. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Log x
    Explanation
    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.

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  • 6. 

    Load data set 143. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Log y
    Explanation
    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.

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  • 7. 
    From the data above, what is the correlation coefficient for the log x transformation? (4 decimal places) - ProProfs

    From the data above, what is the correlation coefficient for the log x transformation? (4 decimal places)

    Correct Answer
    0.8814
    Explanation
    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.

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  • 8. 
    From the data above, what is the correlation coefficient for the reciprocal x transformation? (4 decimal places) - ProProfs

    From the data above, what is the correlation coefficient for the reciprocal x transformation? (4 decimal places)

    Correct Answer
    -0.6852
    Explanation
    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.

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  • 9. 
    From the data above, what is the correlation coefficient for the log y transformation? (4 decimal places) - ProProfs

    From the data above, what is the correlation coefficient for the log y transformation? (4 decimal places)

    Correct Answer
    -0.9663
    Explanation
    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.

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  • 10. 
    From the data above, what is the correlation coefficient for the reciprocal y transformation? (4 decimal places) - ProProfs

    From the data above, what is the correlation coefficient for the reciprocal y transformation? (4 decimal places)

    Correct Answer
    -0.8669
    Explanation
    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.

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  • 11. 
    From the data above, what is the correlation coefficient for the log x transformation? (4 decimal places) - ProProfs

    From the data above, what is the correlation coefficient for the log x transformation? (4 decimal places)

    Correct Answer
    -0.9775
    Explanation
    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.

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  • 12. 
    From the data above, what is the correlation coefficient for the reciprocal x transformation? (4 decimal places) - ProProfs

    From the data above, what is the correlation coefficient for the reciprocal x transformation? (4 decimal places)

    Correct Answer
    0.9660
    Explanation
    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.

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  • 13. 

    A residual plot shows a clear pattern. This means :

    • The scatter plot is linear

    • The scatter plot is non-linear

    • One of our six transformations will linearise the scatter plot

    • One of our six transformations may linearise the scatter plot

    • The scatter plot is doomed

    Correct Answer(s)
    A. The scatter plot is non-linear
    A. One of our six transformations may linearise the scatter plot
    Explanation
    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.

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  • 14. 

    Load data set 122. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Log x
    Explanation
    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.

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  • 15. 

    Load data set 141. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. X squared
    Explanation
    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.

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  • 16. 

    The best way to determine the correct quadrant is :

    • By observing the scatter plot

    • By observing the residual plots

    • By observing the a values

    • By observing the correlation coefficent

    • By dancing with pixies

    Correct Answer
    A. By observing the scatter plot
    Explanation
    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.

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  • 17. 

    The best way to tell if a transformation is required is :

    • By observing the scatter plot

    • By observing the residual plot

    • By observing the b values

    • By observing the correlation coefficent

    • By compass

    Correct Answer
    A. By observing the residual plot
    Explanation
    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.

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  • 18. 

    The most accurate way to determine the best transformation is to :

    • Compare the two transformed scatter plots

    • Compare the two residual plots

    • Compare the Coefficient of Determination

    • Compare the correlation coefficients

    • Toss a coin

    Correct Answer
    A. Compare the correlation coefficients
    Explanation
    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.

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  • 19. 

    Load data set 123.Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. 1/x
    Explanation
    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.

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  • 20. 

    Load data set 132. Which transformation has the highest correlation coefficient.

    • X squared

    • Y squared

    • 1/x

    • 1/y

    • Log x

    • Log y

    Correct Answer
    A. Log x
    Explanation
    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.

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  • 21. 

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 20, 2014
    Quiz Created by
    Anthony Nunan

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