7. Computer technicians were randomly surveyed to collect data on their number of years of experience and their current salary. a) Graph the data in a scatter plot. Draw the line of best fit. Years of experience b) Determine the equation of your line of best fit. Salary (5) 1 27 800 2 44 500 2 34 300 5 37 800 6 51 175 6 53 500 8 58 200 c) Use your line to predict the salary for 12 year experience. Would you be interpolating or extrapolating? 8. A researcher wants to find out whether there is a connection between receiving high grades in math and playing a musical instrument. She interviews the 25 high school students in one math class and asks them these questions: Explain how you could improve each of these components of the survey a) Sample size "1. Do you play a musical instrument?" "2. If yes, what instrument? Guitar Piano Banjo" "3. What was your average in math last year?" b) Survey question issues c) Sampling technique, is there a better way? 7. Computer technicians were randomly surveyed to collect data on their number of years of experience and their current salary. a) Graph the data in a scatter plot. Draw the line of best fit. Years of experience b) Determine the equation of your line of best fit. Salary (5) 1 27 800 2 44 500 2 34 300 5 37 800 6 51 175 6 53 500 8 58 200 c) Use your line to predict the salary for 12 year experience. Would you be interpolating or extrapolating? 8. A researcher wants to find out whether there is a connection between receiving high grades in math and playing a musical instrument. She interviews the 25 high school students in one math class and asks them these questions: Explain how you could improve each of these components of the survey a) Sample size "1. Do you play a musical instrument?" "2. If yes, what instrument? Guitar Piano Banjo" "3. What was your average in math last year?" b) Survey question issues c) Sampling technique, is there a better way?