Distinguished - Correctly calculates the total cost of ownership for each machine in an MS Excel spreadsheet.

Proficient - Calculates the total cost of ownership for each machine in an MS Excel spreadsheet. Minor errors in calculations are present.

Basic - Calculates the total cost of ownership for each machine in an MS Excel spreadsheet. Relevant errors in calculations are present.

Below Expectations - Attempts to calculate the total cost of ownership of each machine in an MS Excel spreadsheet; however, the total cost of ownership is calculated for only one machine, and/or significant errors in calculations are present.

Non-Performance - The calculations of the total cost of ownership for each machine are either nonexistent or lack the components described in the assignment instructions.

Distinguished - Accurately recommends a model for purchase using the TCO calculations.

Proficient - Recommends a model for purchase using the TCO calculations. Minor details are missing or slightly inaccurate.

Basic - Recommends a model for purchase using the TCO calculations. Relevant details are missing and/or inaccurate.

Below Expectations - Attempts to recommend a model for purchase using the TCO calculations; however, the recommendation is not based on TCO calculations, and significant details are missing and inaccurate.

Non-Performance - The recommendation is either nonexistent or lacks the components described in the assignment instructions.

Distinguished - Proficiently converts pertinent information into an insightful mathematical representation in a way that contributes to a further or deeper understanding.

Proficient - Competently converts pertinent information into an appropriate mathematical representation.

Basic - Converts information, but the outcomes are only partially appropriate or accurate.

Below Expectations - Attempts to convert information, but the outcomes are inappropriate or inaccurate.

Non-Performance - The assignment is either nonexistent or lacks the components described in the instructions.

Distinguished - All calculations are correct and adequately all inclusive. Calculations are presented clearly and succinctly.

Proficient - Calculations are mostly accurate and adequately comprehensive to solve the problem.

Basic - Calculations are somewhat accurate and/or represent only a limited number of the calculations required to solve the problem.

Below Expectations - Calculations were attempted but are incorrect and are not comprehensive.

Non-Performance - The assignment is either nonexistent or lacks the components described in the instructions.