Lashonda owns and manages a small business, selling food via carts to people in the business district of her city. She provides incentives for the four salespeople operating the food carts. This year, she plans to offer monetary bonuses to her salespeople based on their individual mean daily sales.

Below is a chart giving a summary of the information that Lashonda has to work with. $($A "sample" is a collection of daily sales figures, in dollars, from this past year for a particular salesperson.$)$