Scatter Plot & Line of Best Fit

Front

What is a scatter plot?

Back

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

Front

What does the slope of a line represent in a linear equation?

Back

The slope represents the rate of change of the dependent variable with respect to the independent variable.

Front

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

Back

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

Front

What does a positive slope indicate in a scatter plot?

Back

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

Front

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as one variable increases, the other variable 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, showing the trend of the data.

Front

What does it mean if a scatter plot has no correlation?

Back

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

Front

How can you determine the line of best fit from a scatter plot?

Back

You can determine the line of best fit by visually assessing the trend of the data points and drawing a line that minimizes the distance to all points.

Front

What is the y-intercept in a linear equation?

Back

The y-intercept is the value of y when x is 0; it is where the line crosses the y-axis.

Front

What does the term 'correlation' refer to in statistics?

Back

Correlation refers to the degree to which two variables move in relation to each other.