TEKS 8.5D

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

How can you use a scatterplot to make predictions?

Back

You can use a scatterplot to make predictions by identifying trends or patterns in the data points and estimating values based on those trends.

Front

What does a positive correlation in a scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

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

Front

What is the purpose of using data in a scatterplot?

Back

The purpose is to visually analyze the relationship between two quantitative variables and to identify any trends or patterns.

Front

What is interpolation in the context of scatterplots?

Back

Interpolation is the process of estimating unknown values within the range of known data points in a scatterplot.

Front

What is extrapolation in the context of scatterplots?

Back

Extrapolation is the process of estimating unknown values outside the range of known data points in a scatterplot.

Front

How do you determine the best fit line in a scatterplot?

Back

The best fit line is determined by minimizing the distance between the line and all the data points, often using linear regression.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations and can affect the overall trend and predictions.

Front

What is the formula for calculating the slope of a line in a scatterplot?

Back

The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1) for two points (x1, y1) and (x2, y2).