Interpreting graphs and scatterplots

Front

What is a line graph?

Back

A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments. It is used to show trends over time.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What is a scatterplot?

Back

A scatterplot is a graph that uses dots to represent the values obtained for two different variables - one plotted along the x-axis and the other plotted along the y-axis.

Front

What is a trend line?

Back

A trend line is a line that is drawn on a scatterplot to show the general direction that a group of points seems to be heading.

Front

How do you interpret the slope of a line in a graph?

Back

The slope of a line indicates the rate of change between the two variables represented in the graph. A steeper slope indicates a greater rate of change.

Front

What is the purpose of a line of best fit?

Back

The line of best fit is used to summarize the relationship between variables in a scatterplot and to make predictions.

Front

What does it mean if there is no correlation between two variables?

Back

If there is no correlation, it means that there is no predictable relationship between the two variables; changes in one do not affect the other.

Front

What is the x-axis in a graph?

Back

The x-axis is the horizontal axis in a graph, typically representing the independent variable.

Front

What is the y-axis in a graph?

Back

The y-axis is the vertical axis in a graph, typically representing the dependent variable.