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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PRIMT I HELP

Lesson Overview

The four stages of testing are test planning, test conduct, analysis & evaluation and test reporting . In this lesson you will learn about the third stage, analysis & evaluation.

This lesson discusses and compares the terms “test”, “evaluation”, and “analysis”, and describes some key evaluation principles and strategies.

Specifically, this lesson:

• Defines “analysis” and “evaluation”;

• Identifies the principles and strategies associated with analyzing data and evaluating systems;

• Outlines the role played by “quality” requirements ;

• Covers key elementary statistical concepts .

Upon completion of this lesson, you should be able to apply the principles and strategies associated with evaluating systems and analyzing test data.

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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PRIMT I HELP

Test versus Evaluation

To understand the analysis and evaluation, stage of the testing you first should understand the difference between “test” and “evaluation”.

Tes ting is the process of exercising a component or system in order to obtain performance data.

Evaluation is the process of interpreting and analyzing test data to define system performance results for decision makers.

The data that is processed during evaluation can come from many different sources, including:

• Current tests ;

• Previous tests ;

• Modeling and simulation;

• Analysis ;

• Inspection;

• Demonstration;

• Expert opinion.

Whatever the source of the data, it must be analyzed first before information useful to decision- makers can be generated.

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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PRIMT I HELP

Test versus Evaluation

To understand the analysis and evaluation, stage of the testing you first should understand the difference between “test” and “evaluation”.

Tes ting is the process of exercising a component or system in order to obtain performance data.

Evaluation is the process of interpreting and analyzing test data to define system performance results for decision makers.

The data that is processed during evaluation can come from many different sources, including:

• Current tests ; Test ing

• Previous tests ; More formally, ” test” is defined in the DAU Glossary as:

• Modeling and simulation; any program or procedure that is designed to obtain, verify, or provide data for the evaluation of any of the

• Analysis ; following: ( 1) progress in accomplishing developmental

• Inspection; objectives; (2) the performance, operational capabili ty and suitability of systems, subsystems, components, and

• Demonstration; equipment items; and (3) the vulnerability and lethali ty of systems, subsystems, components, and equipment items. • Expert opinion.

Whatever the source of the data, it must be analyzed first before information useful to decision-makers can be generated.

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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PR INT I HELP

Knowledge Review

Which of the following is NOT an example of testing?

Bench testing of components

lJ Firing of a cannon

Ship shock trials

./ Comparing results to simulation

Check Answer

Comparing results to simulation is an evaluation func tion all the o ther answers were examples o f testing functions.

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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PR INT I HELP

Analysis

By itself, test data is rarely useful to decision-makers. It must be turned into information. A vital step towards producing useful information from raw test data is analysis. Analysis involves more than just re­ stating the data.

Analysis is the process of using various mathematical or graphical techniques to structure and interpret test data in order to identify patterns, comparisons, or cause/effect.

Analysis involves asking several questions:

• Is the data reasonable?

• Has enough data been gathered?

• Is the qualjtv of the data sufficient?

The use of statistics is a key tool in the overall analysis process.

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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PRIMT I HELP

Analysis

By itself, test data is rarely useful to decision-makers. It must be turned into information. A vital step towards producing useful information from raw test data is analysis . Analysis involves more than just re­ stating the data.

Analysis is the process of using various mathematical or graphical techniques to structure and interpret test data in order to identify patterns, comparisons, or cause/ effect.

Analysis involves asking several questions:

• Is the data reasonable?

• Has enough data been gathered?

• Is the quality o f the data sufficient?

The use of statistics is a key tool in the overall analysis process.

I s t he dat a reasonable?

This question reflects the comparison of the pre-test predictions with the actual test results to verify the test was run properly and the data falls within the expected range .

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TST102 Fundamentals of Test Evaluation

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