Line Graphs & Scatter Plots (A1.2.3.2.1, A1.2.3.2.2, A1.2.3.2.3)

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 is a scatter plot?

Back

A scatter plot 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 does a trend line in a scatter plot indicate?

Back

A trend line indicates the general direction that a group of points seems to be heading. It helps in predicting values based on the observed data.

Front

What does a positive correlation in a scatter plot mean?

Back

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

Front

What does a negative correlation in a scatter plot mean?

Back

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

Front

What is the purpose of using a double-line graph?

Back

A double-line graph is used to compare two sets of data over the same period, allowing for easy visual comparison.

Front

How can you predict values using a trend line?

Back

You can predict values by extending the trend line and finding where it intersects with the value of interest on the x-axis.

Front

What does 'no correlation' mean in a scatter plot?

Back

'No correlation' means that there is no apparent relationship between the two variables being plotted.

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.