Quality metrics and measurement in Software Engineering - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to define a common quality metric.

Software Engineering

The metric that measures the number of defects per thousand lines of code is called [1].

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ADefect Density

BCode Coverage

CMean Time To Repair

DCyclomatic Complexity

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing it with code coverage which measures test completeness.

Defect Density measures how many defects are found per thousand lines of code, helping assess software quality.

2fill in blank

medium

Complete the sentence to identify a metric used to measure software reliability.

Software Engineering

The average time a system operates without failure is called [1].

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ADefect Density

BCode Coverage

CMean Time Between Failures

DResponse Time

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing it up with Mean Time To Repair which measures repair duration.

Mean Time Between Failures (MTBF) measures the average operational time between failures, indicating reliability.

3fill in blank

hard

Fix the error in the definition of a metric that measures test thoroughness.

Software Engineering

The percentage of source code executed by tests is called [1].

Drag options to blanks, or click blank then click option'

ACode Coverage

BDefect Density

CMean Time Between Failures

DCyclomatic Complexity

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing it with defect density or reliability metrics.

Code Coverage measures how much of the source code is executed during testing, indicating test thoroughness.

4fill in blank

hard

Fill both blanks to complete the formula for Defect Density.

Software Engineering

Defect Density = [1] / [2]

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ANumber of Defects

BLines of Code

CTest Cases Executed

DExecution Time

Attempts:

3 left

💡 Hint

Common Mistakes

Using test cases or execution time instead of code size.

Defect Density is calculated by dividing the Number of Defects by the Lines of Code to assess software quality.

5fill in blank

hard

Fill all three blanks to complete the description of Cyclomatic Complexity calculation.

Software Engineering

Cyclomatic Complexity = [1] - [2] + 2 * [3]

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AEdges

BNodes

CConnected Components

DLines of Code

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing lines of code with graph elements.

Cyclomatic Complexity is calculated as the number of Edges minus the number of Nodes plus twice the number of Connected Components in the control flow graph.