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Communication 15. Mr. Caleon provided the following data: n = 15, Ex = 120, _ x2 = 456, Zy = 6, Zy2 = 95, Exy = 165. Ansh is very determined to calculate the correlation coefficient using his programmable calculator. After using the given values while calculating some of the missing data, his calculator produces an error message. Ansh is in shock! To his knowledge, his calculator skills are superb, which is primarily the reason why he has won Roch's Best in Calculator Usage Award annually since Grade 9. In a rage, Ansh dramatically throws his calculator against the wall, narrowly missing Mr. Caleon. Was Ansh' calculator accurate? Use the concepts learned in this unit to justify your response. [3 marks]