Scatter Plots

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 positive correlation indicate in a scatter plot?

Back

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

Front

What does a negative correlation indicate in a scatter plot?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does no correlation mean in a scatter plot?

Back

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

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the general direction of the data.

Front

How do you determine the slope of a line in a scatter plot?

Back

The slope is determined by the change in the y-value divided by the change in the x-value between two points on the line.

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.

Front

What does it mean if the slope of a line is negative?

Back

A negative slope indicates that as the x-value increases, the y-value decreases, showing an inverse relationship.

Front

What is an example of a situation with no correlation?

Back

The number of siblings a person has and their weight is an example of no correlation.

Front

What is an example of a situation with positive correlation?

Back

As the temperature increases, the number of ice cream sales typically increases, showing a positive correlation.