Relative to the analysis of the Walmart dataset, the mean of the Sales data for store 1 was 135,000 155,000 1.34 million 1.55 million Question 18 1pt Relative to the analysis of the Walmart dataset, the correlation coefficient was .54 .88 .54 .88 Relative to the analysis of the Walmart dataset, the mean of the Sales data for store 1 was 135,000 155,000 1.34 million 1.55 million Question 18 1pt Relative to the analysis of the Walmart dataset, the correlation coefficient was .54 .88 .54 .88