A scatter plot is given below. Determine which of the following are appropriate trend lines for the scatter plot.
A scatterplot with several points plotted in a general downward trend from left to right in an approximately straight path.
A scatterplot with several points plotted in a general downward trend from left to right in an approximately straight path. A decreasing line is drawn through the left-most point, with about 1-fourth of the points below the line and 3-fourths of the points above the line. A scatterplot with several points plotted in a general downward trend from left to right in an approximately straight path. A decreasing line is drawn through the approximate center of the data points, with about half of the points below the line and half of the points above the line. A scatterplot with several points plotted in a general downward trend from left to right in an approximately straight path. A decreasing line is drawn through the right-most points, with about 3-fourths of the points below the line and 1-fourth of the points above the line. Appropriate trend line
Inappropriate trend line
The appropriate trend line for the scatter plot described is:
- A scatterplot with several points plotted in a general downward trend from left to right in an approximately straight path. A decreasing line is drawn through the approximate center of the data points, with about half of the points below the line and half of the points above the line.
This trend line represents the overall trend of the data points in a fair and balanced way. The other two trend lines described do not accurately reflect the general downward trend of the data points.