8.SP.1 Flashcard

Front

What is correlation in statistics?

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 does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

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

Front

What does 'no correlation' mean?

Back

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

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. It helps to visualize the relationship between the variables.

Front

What does it mean if a scatterplot has no association?

Back

If a scatterplot has no association, it means that the ordered pairs do not show any predictable pattern.

Front

What is a linear relationship in a scatterplot?

Back

A linear relationship in a scatterplot indicates that the data points can be approximated by a straight line, showing a consistent rate of change.

Front

How can you identify a negative correlation in a graph?

Back

A negative correlation can be identified in a graph where, as one variable increases, the other variable decreases, resulting in a downward slope.

Front

What is the purpose of using scatterplots in statistics?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables and to identify patterns, trends, or correlations.

Front

What is the significance of the slope in a linear relationship?

Back

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