Question

nico measured the water level in his pool every other day for two weeks. which statement best describes the information shown by the scatterplot and trend line.

scatterplot with x-axis labeled day (1 - 14) and y-axis labeled water height. trend line is decreasing. data points are plotted.

\bigcirc as the number of days increased, the water level always decreased.
\bigcirc as the number of days increased, the water level always increased.
\bigcirc as the number of days increased, the water level usually decreased.
\bigcirc as the number of days increased, the water level usually increased.

Explanation:

The trend line slopes downward, showing an overall decreasing pattern of water level as days pass. However, looking at the scatter points, there is one point (day 3 to day 5) where the water level goes up slightly, so the decrease is not absolute ("always"), but a general ("usually") trend.

Answer:

As the number of days increased, the water level usually decreased.