Question

the table shows the shipping costs for items of different values. which best describes the strength of the model? shipping costs for items a weak positive correlation a strong positive correlation a weak negative correlation a strong negative correlation

Explanation:

Step1: Analyze the trend

As the total cost of items (\(x\)) increases (\(25\to45\to50\to70\)), the shipping costs (\(y\)) also increase (\(5.99\to8.99\to8.99\to10.99\)). So, there is a positive correlation.

Step2: Check the strength

The increase is not very steep. For example, from \(x = 25\) to \(x=45\) (increase of \(20\)), \(y\) increases by \(3\); from \(x = 45\) to \(x = 70\) (increase of \(25\)), \(y\) increases by \(2\). The relationship is not extremely tight.

Answer:

a weak positive correlation