Line of Best Fit Flashcard

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, used to make predictions about future data points.

Front

What does a positive correlation indicate in a graph?

Back

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

Front

What does a negative correlation indicate in a graph?

Back

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

Front

What is the purpose of the line of best fit?

Back

The purpose of the line of best fit is to make predictions based on the trends observed in the data.

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

How can you identify the line of best fit on a scatter plot?

Back

The line of best fit can be identified as the line that minimizes the distance between itself and all the points on the scatter plot.

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.

Front

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

Back

An example of a negative correlation is the relationship between temperature and the number of hot chocolate sales; as temperature increases, hot chocolate sales typically decrease.

Front

What does the slope of the line of best fit represent?

Back

The slope of the line of best fit represents the rate of change between the two variables.

Front

What is the y-intercept in the context of a line of best fit?

Back

The y-intercept is the point where the line of best fit crosses the y-axis, representing the value of the dependent variable when the independent variable is zero.