1. Provide an interpretation of the y-intercept of the least-squares regression line.
2. Modified multiple choice: Choose the one correct interpretation structure for the slope of the least-squares regression line, then fill-in-the-blank with the correct number and units.
A. For every 1°C the high temperature increases, the coffee sales increase about __________________.
B. For every $1 the coffee sales increase, the high temperature increases about ___________________.
C. For every $1 the coffee sales increase, the high temperature decreases about ___________________.
D. For every 1°C the high temperature increases, the coffee sales decrease about __________________.
3. If the high temperature at this coffee shop one day last week was 14°C, what is the coffee shop's estimated coffee sales for that day? Round your answer to the nearest cent.
4. Before performing any regression analyses, what is the benefit of noting that the smallest and largest values in the high temperature data set are -2°C and 28°C, respectively?
