Lesson 2 Homework Practice Lines Of Best Fit

The line does not need to pass through every point. In fact, it usually passes through none of them. It represents the trend of the data.

Your homework will likely ask you to "interpret" the slope and intercept. lesson 2 homework practice lines of best fit

An ice cream shop records daily high temperature (°F) and ice cream sales ($). The line does not need to pass through every point

Describe the correlation.

Using our example ( y = 2x + 1 ): [ y = 2(7) + 1 = 15 ] Your homework will likely ask you to "interpret"

b1 = [(2-6)(80-91) + (4-6)(90-91) + (6-6)(95-91) + (8-6)(92-91) + (10-6)(98-91)] / [(2-6)² + (4-6)² + (6-6)² + (8-6)² + (10-6)²] = (16 + 4 + 0 + 2 + 28) / (16 + 4 + 0 + 4 + 16) = 50 / 40 = 1.25