Scatter Plots and Predictions

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive correlation indicate in a scatter plot?

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 plot?

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 plot?

Back

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

Front

What is a 'Line of Best Fit'?

Back

A 'Line of Best Fit' is a straight line that best represents the data on a scatter plot, showing the general direction of the data points.

Front

How can you estimate a value using a scatter plot?

Back

You can estimate a value by locating the corresponding point on the scatter plot and using the 'Line of Best Fit' to predict the outcome.

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots are used to visually assess relationships between variables, identify trends, and make predictions.

Front

What is the significance of the slope of the 'Line of Best Fit'?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

How do you determine if a scatter plot has a strong correlation?

Back

A scatter plot has a strong correlation if the data points are closely clustered around the 'Line of Best Fit'.

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 hours lead to higher scores.