Correlation, Lines of Best Fit, Causation, Interpolation & Extrapolation

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together. A positive correlation means that as one variable increases, the other also increases, while a negative correlation means that as one variable increases, the other decreases.

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. It shows the general direction of the data points and can be used to make predictions.

Front

What is causation?

Back

Causation indicates that one event is the result of the occurrence of another event. It implies a direct cause-and-effect relationship between two variables.

Front

What is interpolation?

Back

Interpolation is the process of estimating unknown values that fall within the range of known data points. It uses existing data to predict values in between.

Front

What is extrapolation?

Back

Extrapolation is the process of estimating unknown values that fall outside the range of known data points. It extends the trend of the data to predict future values.

Front

What does a positive correlation look like on a scatter plot?

Back

A positive correlation on a scatter plot appears as a pattern where points trend upwards from left to right, indicating that as one variable increases, the other variable also increases.

Front

What does a negative correlation look like on a scatter plot?

Back

A negative correlation on a scatter plot appears as a pattern where points trend downwards from left to right, indicating that as one variable increases, the other variable decreases.

Front

What does no correlation mean?

Back

No correlation means there is no discernible relationship between two variables. The data points on a scatter plot appear random and do not follow a clear pattern.

Front

How can you use a trend line to make predictions?

Back

A trend line can be used to predict values by extending the line into the future or using it to find the corresponding value of one variable for a given value of another variable.

Front

What is the purpose of a scatter plot?

Back

A scatter plot is used to visually display the relationship between two quantitative variables, helping to identify patterns, trends, and correlations.