Patterns in Data · Data and Probability

Lines of Best Fit

Informally fitting a straight line to data and using the equation of that line to make predictions.

Key Questions

  1. 1How do we determine if a linear model is a good fit for a particular scatter plot?
  2. 2What do the slope and intercept of a trend line represent in a real world data context?
  3. 3How reliable are predictions made using a line of best fit for values outside our data range?

Ontario Curriculum Expectations

ON: Data - Grade 8
Grade: Grade 8
Subject: Mathematics
Unit: Patterns in Data
Period: Data and Probability

Suggested Methodologies

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More in Patterns in Data

Scatter Plots and Association

Constructing and interpreting scatter plots to look for patterns, clusters, and outliers in data sets.

2 methodologies

Categorical Data and Two Way Tables

Using two way tables to summarize bivariate categorical data and calculating relative frequencies.

2 methodologies

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