Scatter Plots-Dec 11

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 tends to increase.

Front

What does a negative correlation indicate in a scatter plot?

Back

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

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

How can you determine if there is no correlation in a scatter plot?

Back

If the data points are scattered randomly without any discernible pattern, it indicates no correlation.

Front

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

Back

A trend line helps to visualize the overall direction of the data points and can be used to make predictions.

Front

If Joe earned $400 and worked 25 hours, what is the rate per hour?

Back

The rate per hour is $16 per hour ($400 ÷ 25 hours).

Front

What is the relationship between the number of siblings and weight?

Back

There is no correlation; the number of siblings does not affect a person's weight.

Front

What is an example of a negative association?

Back

An example of a negative association is how many layers of clothing a person wears and the temperature outside.

Front

How do you predict values using a scatter plot?

Back

You can predict values by using the trend line to estimate the corresponding value for a given input.