A data set with 7 observations yielded the following.Use the simple linear regression model. 
Calculate the correlation coefficient.
Definitions:
Open Account
A credit arrangement where goods or services are sold without immediate payment, allowing the buyer to pay at a later scheduled date.
EOQ Model
The Economic Order Quantity model is used to determine the optimal order size to minimize the sum of ordering, carrying, and stockout costs.
Reorder Points
The inventory level at which a new order should be placed to replenish stock before it runs out, avoiding stockouts and production delays.
Carrying Costs
The complete expense associated with keeping inventory, encompassing storage fees, insurance, and the cost of missed opportunities.
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