There Is an Extremely High Negative Correlation Between Altitude and the Percentage

question 21

Multiple Choice

There is an extremely high negative correlation between altitude and the percentage of oxygen in the air.Is it correct to say that high altitudes cause low amounts of oxygen in the air based on a linear regression equation and the Pearson correlation coefficient?

• A) yes, because the regression analysis reveals a strong correlation
• B) yes, because the correlation is negative
• C) no, because the correlation is negative
• D) no, because regression analysis does not imply causation

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