Scatter diagram

• What type of data is shown in a scatter diagram?

  Numerical data
• What does a scatter diagram graph?

  Pairs of numerical data on two axes
• What is the purpose of a scatter diagram?

  To look for a relationship between variables
• What indicates that two variables are correlated in a scatter diagram?

  Points fall along a line or curve
• How does the correlation strength affect the points in a scatter diagram?

  Tighter points hug the line with better correlation