At White Clay Pottery, a kiln is used to bake ceramic pottery. The production manager wishes...

 

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At White Clay Pottery, a kiln is used to bake ceramic pottery. The production manager wishes to determine the relationship between temperature and brittleness, so he takes measurements of the brittleness of test items versus the temperature of the oven in degrees C (see Table Q7 below). Table Q7: Measurements of the brittleness of test items versus the temperature of the oven in degrees C at White Clay Pottery Temperature 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 Brittleness 2.5 1.9 3.4 2.7 3.8 4.7 4.1 5.0 5.7 5.1 6.0 6.6 6.8 7.7 8.1 (a) Use the Excel Regression tool to determine the regression equation. (b) Determine the R value. Interpret your answer. (c) If the oven is increase to 875 C, predict the brittleness measure. (3) (3) (2) (d) Show the plot of the correlation between the two variables (i.e. Temperature line fit plot). (7) At White Clay Pottery, a kiln is used to bake ceramic pottery. The production manager wishes to determine the relationship between temperature and brittleness, so he takes measurements of the brittleness of test items versus the temperature of the oven in degrees C (see Table Q7 below). Table Q7: Measurements of the brittleness of test items versus the temperature of the oven in degrees C at White Clay Pottery Temperature 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 Brittleness 2.5 1.9 3.4 2.7 3.8 4.7 4.1 5.0 5.7 5.1 6.0 6.6 6.8 7.7 8.1 (a) Use the Excel Regression tool to determine the regression equation. (b) Determine the R value. Interpret your answer. (c) If the oven is increase to 875 C, predict the brittleness measure. (3) (3) (2) (d) Show the plot of the correlation between the two variables (i.e. Temperature line fit plot). (7)