Froggy Jump : Correlation & Regression Quiz

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Test your stats intuition on correlation and regression.

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Yaj Kotak

United States

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Froggy Jump : Correlation & Regression Quiz


Froggy Jumps Froggy Jump : Correlation & Regression QuizOnline version Test your stats intuition on correlation and regression. by Yaj Kotak 1 1. A scatterplot shows a strong linear pattern with points close to a straight line sloping upward. What does this suggest? a C) Strong positive correlation b A) Strong negative correlation c B) Weak positive correlation 2 2. The correlation between hours studied and exam score is r = -0.82. What does the negative sign indicate? a A) The relationship is weak b D) There is no relationship c B) As one variable increases, the other decreases 3 3. In the regression equation y = 3x + 4, what does the slope represent? a A) The predicted value of y when x = 0 b D) The proportion of variation explained c B) The change in y for each 1-unit increase in x 4 4. When should a least squares regression line NOT be used? a B) When the scatterplot shows a curved pattern b A) When the correlation is strong c D) When the sample size is large 5 5. If R^2 = 0.49, how should this value be interpreted? a A) 49% of the data points fall on the line b B) 49% of the variation in y is explained by x c C) The correlation is 0.49 6 6. A correlation of r = 0 means: a B) There is no linear relationship b A) There is no relationship at all c D) The slope of the regression line is 0 7 7. Which value represents the strongest linear relationship? a D) -0.91 b A) 0.22 c C) 0.74 8 8. When testing a correlation hypothesis, what does the null hypothesis usually state? a D) r is negative b A) r = 1 c B) r = 0 9 9. Which situation is best analyzed using a contingency table? a C) Relationship between eye color and gender b B) Comparing two means c A) Relationship between height and weight 10 10. A chi-square test is most appropriate when data are: a C) Categorical counts b B) Normally distributed c A) Quantitative and paired

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Froggy Jump : Correlation & Regression Quiz

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Froggy Jump : Correlation & Regression QuizOnline version

by Yaj Kotak

1. A scatterplot shows a strong linear pattern with points close to a straight line sloping upward. What does this suggest?

2. The correlation between hours studied and exam score is r = -0.82. What does the negative sign indicate?

3. In the regression equation y = 3x + 4, what does the slope represent?

4. When should a least squares regression line NOT be used?

5. If R^2 = 0.49, how should this value be interpreted?

6. A correlation of r = 0 means:

7. Which value represents the strongest linear relationship?

8. When testing a correlation hypothesis, what does the null hypothesis usually state?

9. Which situation is best analyzed using a contingency table?

10. A chi-square test is most appropriate when data are: