---
title: "8.FGR.6: Bivariate Quantitative Data (Georgia Mathematics standard)"
code: 8.FGR.6
cite_as: Georgia Standards of Excellence, Mathematics, 8.FGR.6
subject: math
grades:
  - grade-8
language: en
canonical_url: https://georgiahomeroom.org/standards/code/8.FGR.6
md_url: https://georgiahomeroom.org/standards/code/8.FGR.6.md
alternate_language_url: https://georgiahomeroom.org/es/standards/code/8.FGR.6.md
source_url: https://case.georgiastandards.org/ims/case/v1p1/CFDocuments/e9dd7229-3558-4df2-85c6-57b8938f6180
source_last_changed: 2024-10-09
data_built: 2026-09-18
publisher: Georgia Homeroom, a free public-interest project of Georgia Civic Data. Not affiliated with or endorsed by the Georgia Department of Education or any school district.
up: https://georgiahomeroom.org/standards/math/grade-8.md
index: https://georgiahomeroom.org/standards/index.md
---

# 8.FGR.6: Bivariate Quantitative Data

Solve practical, linear problems involving situations using bivariate quantitative data.

- Subject: Mathematics
- Appears in: Grade 8, https://georgiahomeroom.org/standards/math/grade-8.md

## Expectations

- **8.FGR.6.1**: Show that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, visually fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line of best fit.
- **8.FGR.6.2**: Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercepts.
- **8.FGR.6.3**: Explain the meaning of the predicted slope (rate of change) and the predicted intercept (constant term) of a linear model in the context of the data.
- **8.FGR.6.4**: Use appropriate graphical displays from data distributions involving lines of best fit to draw informal inferences and answer the statistical investigative question posed in an unbiased statistical study.

## Georgia Milestones coverage

- Mathematics Grade 8 (EOG). Functional & Graphical Reasoning. Solve practical, linear problems involving situations using bivariate quantitative data. (about 10% of the test; 6 points)

## What mastery looks like

Georgia's Achievement Level Descriptors. The levels are cumulative: each includes the ones before it. Proficient is on grade level.

- **Developing**: Determine whether a scatter plot is represented by a linear association and, if so, whether that association is positive or negative. Given a scatter plot and the line of best fit or an equation of the line of best fit, use a value of one variable to predict the value of the other variable.
- **Proficient**: Construct an estimated line of best fit and assess whether a given line is a good fit by judging the closeness of the data points. Interpret the slope and y-intercept of a line of best fit in the context of a realistic problem.
- **Distinguished**: Write an equation for the line of best fit and analyze data distributions involving lines of best fit to make informal inferences and answer statistical investigative questions.

Source: Georgia Standards of Excellence, published by the Georgia Department of Education at case.georgiastandards.org.