OpenUP/OpenUP_RU/library/openup_basic/guidances/concepts/metrics.xmi

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  <mainDescription>&lt;h3&gt;
    What is a Metric?
&lt;/h3&gt;
&lt;p&gt;
    We distinguish between measure and metric.&amp;nbsp; To clarify, let’s start by defining what is meant by measure and by
    metric.
&lt;/p&gt;
&lt;ul&gt;
    &lt;li&gt;
        &lt;strong&gt;Measure&lt;/strong&gt;:&amp;nbsp;a raw data item that is directly measured and that will be used to calculate a
        metric.&amp;nbsp;
    &lt;/li&gt;
    &lt;li&gt;
        &lt;strong&gt;Metric&lt;/strong&gt;:&amp;nbsp;an interpretation of a measure or a set of measures that you use to guide your
        project.
    &lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;
    For example, recording how many test cases have passed and how many have failed are &lt;strong&gt;measures&lt;/strong&gt;.
    Interpreting what level of quality this indicates and how it reflects the team's progress within the current iteration
    is a &lt;strong&gt;metric&lt;/strong&gt;.
&lt;/p&gt;
&lt;h3&gt;
    Why Measure?
&lt;/h3&gt;
&lt;p&gt;
    Measurements will mainly help you to:
&lt;/p&gt;
&lt;ul&gt;
    &lt;li&gt;
        &lt;div style=&quot;MARGIN-LEFT: 2em&quot; align=&quot;left&quot;&gt;
            &lt;strong&gt;Communicate effectively&lt;/strong&gt;. Measurement supports effective communication among team members and
            project stakeholders.&amp;nbsp;
        &lt;/div&gt;
    &lt;/li&gt;
    &lt;li&gt;
        &lt;div style=&quot;MARGIN-LEFT: 2em&quot; align=&quot;left&quot;&gt;
            &lt;strong&gt;Identify and correct problems early&lt;/strong&gt;. Measurement enables you to identify and manage potential
            problems early in the development lifecycle.&amp;nbsp;
        &lt;/div&gt;
    &lt;/li&gt;
    &lt;li&gt;
        &lt;div style=&quot;MARGIN-LEFT: 2em&quot; align=&quot;left&quot;&gt;
            &lt;strong&gt;Make informed trade-offs&lt;/strong&gt;. Measurement helps assess objectively the impact of decisions,
            helping managers to make trade-off decisions to best meet project goals.&amp;nbsp;&amp;nbsp;
        &lt;/div&gt;
    &lt;/li&gt;
    &lt;li&gt;
        &lt;div style=&quot;MARGIN-LEFT: 2em&quot; align=&quot;left&quot;&gt;
            &lt;strong&gt;Tune estimations&lt;/strong&gt;. Recording schedule, progress, and expenditures for projects will help team
            members to make more reliable estimations in the future.
        &lt;/div&gt;
    &lt;/li&gt;
&lt;/ul&gt;
&lt;h3 align=&quot;left&quot;&gt;
    Potential Challenges
&lt;/h3&gt;
&lt;p align=&quot;left&quot;&gt;
    There are several dangers when it comes to metrics:
&lt;/p&gt;
&lt;div style=&quot;margin-left: 2em&quot;&gt;
    &lt;ul&gt;
        &lt;li&gt;
            &lt;div align=&quot;left&quot;&gt;
                They can be too costly.&amp;nbsp;The benefit provided by the metric must exceed the cost of collecting
                it.&amp;nbsp;Keep your measurements simple and easy to collect.
            &lt;/div&gt;
        &lt;/li&gt;
        &lt;li&gt;
            &lt;div align=&quot;left&quot;&gt;
                They’re a poor substitute for communication.&amp;nbsp;The best way to determine the current status of a project
                is to ask the people involved, not to look at a report summarizing key metrics.
            &lt;/div&gt;
        &lt;/li&gt;
        &lt;li&gt;
            &lt;div align=&quot;left&quot;&gt;
                They can be misleading.&amp;nbsp; No metric or collection of metrics is perfect.&amp;nbsp;Furthermore, the
                measurements upon which they are based can be manipulated by the people capturing them.&amp;nbsp;Don’t rely
                simply upon metrics to manage a project.&lt;br /&gt;
            &lt;/div&gt;
        &lt;/li&gt;
    &lt;/ul&gt;
&lt;/div&gt;</mainDescription>
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