Questions and Answers
What is the value of r if there is no correlation between x and y?
What is the formula used to calculate the linear correlation coefficient r?
What does a positive value of r indicate?
What is the range of values for r that indicates a very weak correlation?
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What is the value of r if there is a perfect negative correlation between x and y?
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What is the term used to describe the correlation coefficient r?
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What is the equation of the linear regression line?
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What does a correlation coefficient of -0.6 indicate?
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What is the purpose of the regression coefficient?
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What is the range of values for the correlation coefficient?
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What does a correlation coefficient of 0.2 indicate?
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What is the first step in using a calculator for linear regression?
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What does a correlation coefficient of -1 indicate?
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What is the interpretation of a negative correlation?
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What does a correlation coefficient of 0.8 indicate?
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If the correlation coefficient r is -0.4, what can be said about the relationship between x and y?
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What is the name of the correlation coefficient that is calculated using the formula r = b(σ_x / σ_y)?
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If the correlation coefficient r is -0.95, what can be said about the relationship between x and y?
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What is the reason why it is often easier to calculate the correlation coefficient r using a calculator?
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If the correlation coefficient r is 0.1, what can be said about the relationship between x and y?
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What does a correlation coefficient of 0.95 indicate?
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Which of the following is true about the linear regression line?
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What is the purpose of calculating the gradient (B) in linear regression?
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What does a correlation coefficient of -0.85 indicate?
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What is the first step in using a calculator for linear regression analysis?
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What can be concluded about the relationship between x and y if the correlation coefficient (r) is -0.4?
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What does the y-intercept (A) represent in the linear regression equation?
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What is the interpretation of a correlation coefficient of 0.7?
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What does a correlation coefficient of 0.6 indicate about the relationship between x and y?
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What is the purpose of calculating the correlation coefficient r?
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What is the interpretation of a correlation coefficient of -0.8?
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What happens to y when x increases and the correlation coefficient r is 0.4?
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What can be said about the relationship between x and y if the correlation coefficient r is 0.9?
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What does a correlation coefficient of 0 indicate about the relationship between x and y?
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What is the primary purpose of the linear regression line?
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What does a correlation coefficient of -0.7 indicate?
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What is the value of the correlation coefficient if there is a perfect positive correlation?
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What does the gradient (B) represent in the linear regression equation?
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What is the interpretation of a zero correlation coefficient?
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What is the second step in using a calculator for linear regression?
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What does a correlation coefficient of 0.9 indicate?
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What is the name of the line that best fits a set of bivariate numerical data?
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