Question

based on the scatter plot below, which is a better prediction for x when y = 51?
21
86

Explanation:

Step1: Analyze the scatter plot trend

The scatter plot shows a positive correlation (as \( x \) increases, \( y \) generally increases). So when \( y = 51 \), we need to find the \( x \) value that fits the trend.

Step2: Compare the two options

• For \( x = 21 \), looking at the plot, when \( x \) is around 20 - 30, \( y \) values are lower (around 20 - 40), not near 51.
• For \( x = 86 \), when \( x \) is around 80 - 100, \( y \) values are in the range of 40 - 60, which includes 51. So \( x = 86 \) is a better prediction.

Answer:

86