8.5D Scatter Plots and Trend Lines

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

Front

What does a trend line represent in a scatter plot?

Back

A trend line represents the general direction or pattern of the data points in a scatter plot, indicating the relationship between the variables.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, minimizing the distance between the line and all data points.

Front

How do you determine if a line is a line of best fit?

Back

A line is a line of best fit if it passes through the middle of the data points and accurately represents the trend of the data.

Front

What does it mean if a scatter plot shows a positive correlation?

Back

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

Front

What does it mean if a scatter plot shows a negative correlation?

Back

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

Front

What is the purpose of using a trend line in predictions?

Back

A trend line is used in predictions to estimate the value of one variable based on the value of another variable.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line by locating the value on the x-axis, moving up to the trend line, and then moving horizontally to find the corresponding value on the y-axis.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations and can affect the accuracy of the trend line.

Front

What is interpolation in the context of scatter plots?

Back

Interpolation is estimating a value within the range of the data points on a scatter plot.