Ch 9 Test: Data Analysis and Displays

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Front

How do you determine the earnings of a food server from a scatter plot?

Back

By locating the number of hours worked on the x-axis and finding the corresponding earnings on the y-axis.

Front

What is a scatter plot?

Back

A graph that uses dots to represent the values obtained for two different variables, showing the relationship between them.

Front

What is a line plot?

Back

A type of graph that displays data along a number line, showing frequency of data points.

Front

What is a misleading graph?

Back

A graph that presents data in a way that can lead to incorrect interpretations or conclusions.

Front

Why is it important for the y-axis to start at 0?

Back

Starting at 0 provides a true representation of the data, preventing exaggeration of differences.

Front

What is the purpose of data displays?

Back

To visually represent data in a way that makes it easier to understand and analyze.

Front

What are the different types of data displays?

Back

Common types include bar graphs, line plots, scatter plots, and pie charts.

Front

How can you identify a line plot?

Back

A line plot shows data points above a number line, indicating frequency of each value.

Front

What does the slope of a line of best fit indicate?

Back

The slope indicates the rate of change between the two variables represented in the scatter plot.