Module 11 Test: Scatter Plots & Two-Way Tables

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 grid.

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend in the data, showing the general direction that the data points follow.

Front

How do you determine the line of best fit?

Back

The line of best fit can be determined using statistical methods such as least squares regression, which minimizes the distance between the data points and the line.

Front

What is a two-way table?

Back

A two-way table is a data display that organizes data based on two categorical variables, allowing for comparison of the frequencies of different categories.

Front

What is the purpose of using a trend line in a scatter plot?

Back

A trend line helps to visualize the overall direction of the data and can be used to make predictions about future data points.

Front

What does it mean if the correlation coefficient is close to 1 or -1?

Back

A correlation coefficient close to 1 indicates a strong positive correlation, while a coefficient close to -1 indicates a strong negative correlation between the variables.

Front

What is interpolation in the context of scatter plots?

Back

Interpolation is the process of estimating a value within the range of known data points in a scatter plot.

Front

What is extrapolation in the context of scatter plots?

Back

Extrapolation is the process of estimating a value outside the range of known data points in a scatter plot.

Front

What does it mean if a data point lies far from the line of best fit?

Back

A data point that lies far from the line of best fit may be considered an outlier, indicating it does not follow the general trend of the data.

Front

How can you identify outliers in a scatter plot?

Back

Outliers can be identified as points that are significantly distant from the other data points and do not fit the overall pattern.