Grade 8 IM Unit 6 Lessons 1 - 6 Review

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional plane.

Front

What does a positive association in a scatterplot indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a scatterplot indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What does it mean if a scatterplot has no correlation?

Back

It means that there is no predictable pattern between the two variables being plotted.

Front

How can you determine the equation of a line from a scatterplot?

Back

You can determine the equation by identifying the slope and y-intercept from the plotted points.

Front

What is the slope in the equation y = mx + b?

Back

The slope (m) represents the rate of change of y with respect to x.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept (b) is the value of y when x is 0, indicating where the line crosses the y-axis.

Front

If a scatterplot shows a student with 12 absences scoring 60 on the final exam, what does this suggest?

Back

It suggests that there is a negative relationship between the number of absences and the final exam score.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two variables and identify trends or patterns.

Front

What does it mean if a scatterplot has a strong correlation?

Back

A strong correlation means that the data points are closely clustered around a line, indicating a strong relationship between the variables.