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Exploring Scatter Plots

3.1.1 Exploring Scatter Plots

3.1.1 • Exploring Scatter Plots

Warm Up

What do you notice? What do you wonder?

y=1.5x+22.7y=1.5x+22.7

Scatter plot showing maximum noise level in decibels versus the number of people given in thousands displays data points and a blue line. The x-axis representing the number of people extends from 55 to 80 with a scale of 5. The y-axis representing the noise level extends from 100 to 140 with a scale of 5.

Compare your answer: Your answer may vary, but here are some samples.

Things you may notice:

  • More people generally means more noise.
  • At around 65,000 people, there are three different noise levels.
  • The equation of the line is given.

Things you may wonder:

  • Where is the origin?
  • Why are all the points not on the line?
  • What can we do with this?