Line of Best Fit Flashcard

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Front

What does a positive association in a graph indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative association in a graph indicate?

Back

As one variable increases, the other variable decreases.

Front

What does 'no correlation' mean in a scatter plot?

Back

There is no apparent relationship between the two variables.

Front

How do you identify an outlier in a scatter plot?

Back

An outlier is a data point that is significantly different from the other points.

Front

What is the purpose of a trend line in a scatter plot?

Back

To summarize the relationship between the variables and make predictions.

Front

How can you use a trend line to make predictions?

Back

By extending the trend line to estimate values for variables not directly measured.

Front

What is the equation of a line in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

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

Back

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 value of y when x is zero, indicating where the line crosses the y-axis.