W \( \quad \begin{array}{l}\text { 18. Which correlation coefficient BEST represents a moderate, negative correlation? } \\ r=-0.33 \\ r=-0.48 \\ r=0.53 \\ r=-0.68\end{array} \)
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The correlation coefficient that BEST represents a moderate, negative correlation is \( r = -0.48 \). In the world of statistics, a negative correlation indicates that as one variable increases, the other tends to decrease. Values closer to -0.5 often signify a modest relationship, making -0.48 the sweet spot for your query! To better visualize this, think of temperature and hot chocolate sales during winter. As temperatures drop (an increase in chill), hot chocolate sales tend to rise (a decrease in cold drink preference). A correlation around -0.48 suggests that while there's a relationship, it's not super strong, giving you that delightful yet not overpowering connection to explore!