SAT Math· difficulty 4/5
A study finds a strong positive correlation between ice cream sales and drowning incidents. Which conclusion is most appropriate?
Drowning causes ice cream sales.
The correlation is meaningless.
There may be a confounding variable (e.g., warm weather).
Ice cream causes drowning.
Explanation
Correlation does not imply causation. Both variables likely depend on a third factor (warm weather increases both).
Want 10 more like this — adaptive to your weak spots?
The line of best fit for hours studied (x) and exam score (y) is y = 5x + 65. What is the predicted score for 6 hours of study?…
chevron_rightFor a data point (x, y) = (10, 75), the line of best fit predicts y = 80. The residual is:…
chevron_rightA linear model for predicting weekly expenses is y = 30x + 100 where x is hours worked. What does the slope 30 represent?…
chevron_right