If you calculated correlation between the sales and item counts of a large number of individual items rather than using daily totals, would you expect the correlation to be about 0.95 or quite different? Explain.

For example, your comparing the correlation of the total of daily sales to total item count and the correlation of a large number of sales of individual items to individual items, why would the correlation for total of daily sales to total item count be higher? Why would the sales of individual items to individual items be lower compared to total of daily sales to total item count?