Scatter Plot Statistics Example 2

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Example 2

medium
Given points: (1,2), (2,4), (3,5), (4,4), (5,8). Plot them and identify any outlier from the general trend.

Solution

  1. 1
    Step 1: The general trend is upward: as x increases, y tends to increase.
  2. 2
    Step 2: Most points roughly follow a line, but the point (4, 4) dips below the trend compared to neighbours (3,5) and (5,8).
  3. 3
    Step 3: (4, 4) is a mild outlier from the linear trend, though not extreme.

Answer

The trend is positive and roughly linear. The point (4, 4) deviates below the general trend.
Scatter plots help us visually identify outliers — points that deviate from the overall pattern. These outliers can influence the line of best fit and correlation coefficient.

About Scatter Plot

A graph that plots pairs of numerical values as dots on a coordinate plane, revealing the relationship between two variables.

Learn more about Scatter Plot →

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