An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data:

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What is this year's forecast using the least squares trend line for these data?

Question $27$Select one:

a$.$

$21,000$

b$.$

$22,000$

c$.$

$23,000$

d$.$

$24,000$

e$.$

$20,000$