Scatter Plots Review

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 in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

What does 'no association' mean in the context of scatter plots?

Back

'No association' means that there is no discernible relationship between the two variables being plotted.

Front

How can you estimate values using a trend line in a scatter plot?

Back

You can estimate values by finding the corresponding point on the trend line for a given value of one variable.

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 is the purpose of using a trend line in a scatter plot?

Back

The purpose of a trend line is to summarize the relationship between the variables and to make predictions.

Front

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

Back

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

Front

What does the y-intercept represent in a linear equation from a scatter plot?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations and can affect the trend line and correlation.