2025年9月国际A卷 · 第 16 题

2025年9月国际A卷 · 原库模块 1 · Q16 原库参考解析

As part of a study on sedimentary habitats, the water temperature was recorded at different depths below the surface of the water in the northern Alboran Sea. 
The data shown in the scatterplot give the recorded temperature, in degrees Celsius, for 7 depths, in meters, below the surface of the water.
Which of the following is closest to the slope of a line of best fit for the data shown?