Scatter Graphs Flashcard

Front

What is a scatter graph?

Back

A scatter graph is a type of 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 positive correlation indicate in a scatter graph?

Back

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

Front

What does a negative correlation indicate in a scatter graph?

Back

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

Front

What does no correlation mean in a scatter graph?

Back

No correlation means that there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

Front

How do you determine the line of best fit in a scatter graph?

Back

The line of best fit is determined by drawing a line that best represents the data points on the scatter graph, minimizing the distance between the line and all the points.

Front

What is the purpose of estimating values from a scatter graph?

Back

Estimating values from a scatter graph helps to predict the value of one variable based on the known value of another variable.

Front

What is the significance of the x-axis and y-axis in a scatter graph?

Back

The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.

Front

How can you identify a strong correlation in a scatter graph?

Back

A strong correlation is identified when the data points are closely clustered around the line of best fit.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

What is an example of a positive correlation in real life?

Back

An example of a positive correlation is the relationship between hours studied and test scores; generally, more study time leads to higher scores.