Scatterplots and 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 line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend of the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

What is positive correlation in a scatter plot?

Back

Positive correlation occurs when an increase in one variable leads to an increase in another variable, resulting in an upward trend in the scatter plot.

Front

What is negative correlation in a scatter plot?

Back

Negative correlation occurs when an increase in one variable leads to a decrease in another variable, resulting in a downward trend in the scatter plot.

Front

What does no correlation mean in a scatter plot?

Back

No correlation means there is no discernible relationship between the two variables, and the data points do not show any clear trend.

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by visually assessing the scatter plot and drawing a line that best represents the trend of the data points.

Front

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

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope of a line indicate in a scatter plot?

Back

The slope of a line indicates the rate of change between the two variables; a steeper slope means a greater rate of change.

Front

What is the y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is zero.

Front

How can you identify a positive correlation in a scatter plot?

Back

A positive correlation can be identified when the data points trend upwards from left to right.