Mathematical Skills: Ability to add, subtract, multiply, and divide in all units of measure, using whole numbers, common fractions, and decimals; ability to compute rate, ratio, and percent and to draw and interpret bar graphs; ability to understand and interpret statistical reports, data charts and graphs. Language Skills : Ability to read and interpret documents such as medication documentation, business correspondence and procedure manuals; ability to write routine reports and business correspondence; ability to speak effectively, both in person and by telephone, to customers or employees of the organization.