Question

the table shows the shipping costs for items of different values. which best describes the strength of the model? a weak positive correlation a strong positive correlation a weak negative correlation a strong negative correlation shipping costs for items total cost of items shipping costs $25 $5.99 $45 $8.99 $50 $8.99 $70 $10.99

Explanation:

Step1: Analyze the relationship between total cost and shipping cost

As the total cost of items (\(25,45,50,70\)) increases, the shipping cost (\(5.99,8.99,8.99,10.99\)) also generally increases. So, it is a positive correlation.

Step2: Determine the strength of the positive correlation

The increase in shipping cost is not extremely rapid or perfectly in - sync (for example, from \(25\) to \(45\) (an increase of \(20\)) the shipping cost increases by \(3\), from \(45\) to \(50\) (increase of \(5\)) the shipping cost remains the same, from \(50\) to \(70\) (increase of \(20\)) the shipping cost increases by \(2\)). So, it is not a very strong positive correlation.

Answer:

a weak positive correlation