Question

based on the graph, which is the best prediction of the height of a student with an arm span of 143 cm?
○ 123 cm
○ 133 cm
○ 143 cm
○ 153 cm

Explanation:

Step1: Analyze the Graph Trend

The scatter plot shows a positive linear relationship between arm span (y - axis) and height (x - axis). Points are close to a line where arm span and height seem approximately equal or have a very close linear relationship.

Step2: Predict for Arm Span 143 cm

Since the relationship is such that arm span and height are nearly equal (from the trend of the points, like when arm span is around 145, height is around 145 - 150, etc.), for an arm span of 143 cm, the height should be close to 143 cm. Among the options, 143 cm is the one that follows this trend.

Answer:

143 cm