Scatterplot Review

Front

What is a scatterplot?

Back

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

Front

What does the line of best fit represent in a scatterplot?

Back

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

Front

What is a positive correlation?

Back

A positive correlation occurs when an increase in one variable leads to an increase in another variable, resulting in an upward trend in the scatterplot.

Front

What is a negative correlation?

Back

A negative correlation occurs when an increase in one variable leads to a decrease in another variable, resulting in a downward trend in the scatterplot.

Front

What does no correlation mean?

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 correlation from a scatterplot?

Back

You determine the correlation by observing the direction and pattern of the data points: upward for positive, downward for negative, and scattered for no correlation.

Front

What is the equation of a line?

Back

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

Front

What is the slope of a line?

Back

The slope of a line indicates the steepness and direction of the line, calculated as the change in y divided by the change in x (rise/run).

Front

What is the y-intercept?

Back

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

Front

What does it mean if a line is not an accurate line of best fit?

Back

If a line is not an accurate line of best fit, it means that it does not closely follow the trend of the data points, leading to poor predictions.