Scatter Plot Flashcard

Front

What is a scatter plot?

Back

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

Front

What does a linear relationship in a scatter plot indicate?

Back

A linear relationship indicates that as one variable changes, the other variable changes in a consistent manner, often represented by a straight line.

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 general direction of the data points.

Front

What does a positive correlation mean in a scatter plot?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation mean in a scatter plot?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

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

Back

No correlation means that there is no discernible relationship between the two variables; the data points are scattered randomly.

Front

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

Back

A strong correlation is indicated by data points that are closely clustered around a line of best fit.

Front

What is the formula for a line of best fit?

Back

The formula for a line of best fit is typically expressed as y = mx + b, where m is the slope and b is the y-intercept.

Front

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

Back

The slope represents the rate of change between the two variables; a steeper slope indicates a stronger relationship.

Front

What is the y-intercept in a scatter plot?

Back

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