Regression Lines and Bivariate Statistics

gutierrezs

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Nov 24, 2020
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Use the potency and temperature data below. An experiment was conducted to observe the effect of an increase in temperature on the potency of an antibiotic. Three 1-ounce portions of the antibiotic were stored for equal lengths of time at each of these temperatures: 30°, 50°, 70°, and 90°. The potency readings observed at each temperature of the experimental period are listed here:
Potency Readings, y 38, 43, 29 32, 26, 33 19, 27, 23 14, 19, 21
Temperature, x 30° 50° 70° 90°
(30, 38) (30, 43) (30, 29) (50, 32) (50, 26) (50,33) (70, 19) (70, 27) (70,23) (90,14) (90,19) (90,21)
Within the sample data, is a one-degree increase in storage temperature of antibiotics associated with a decrease in potency? If so, how much?
 
Have you plotted the points?
Do you know how to find the correlation coefficient?
Do you know how to find the equation of the regression line?
 
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