Unit 5 Test REVIEW

Front

What does a scatterplot showing no association between the x variable and y variable look like?

Back

A scatterplot with points that are randomly distributed without any discernible pattern or trend.

Front

What does a scatterplot showing a nonlinear association between the x variable and y variable indicate?

Back

A scatterplot where the relationship between the variables is not a straight line, indicating a more complex relationship.

Front

What is the mean absolute deviation (MAD)?

Back

The average distance between each data point and the mean of the data set.

Front

If the mean absolute deviation is 18.6, what does this mean?

Back

It means that, on average, each data point is 18.6 units away from the mean.

Front

How can you predict values using a scatterplot?

Back

By observing the trend in the scatterplot, you can estimate the value of the dependent variable based on the independent variable.

Front

What is the relationship between temperature and ice cream sales in a scatterplot?

Back

Typically, as temperature increases, ice cream sales also increase.

Front

What does a high mean absolute deviation indicate about a data set?

Back

It indicates that the data points are spread out over a wider range from the mean.

Front

What is the formula for calculating mean absolute deviation?

Back

MAD = (Σ|xi - mean|) / n, where xi is each data point, mean is the average, and n is the number of data points.

Front

What does it mean if a scatterplot has a positive correlation?

Back

It means that as one variable increases, the other variable also tends to increase.

Front

What does it mean if a scatterplot has a negative correlation?

Back

It means that as one variable increases, the other variable tends to decrease.