Defect density and detection rate in Testing Fundamentals - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate defect density given total defects and size.

Testing Fundamentals

defect_density = total_defects / [1]

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

Asize

Btotal_defects

Ctime

Dtest_cases

Attempts:

3 left

💡 Hint

Common Mistakes

Dividing defects by time instead of size.

Using total defects twice in the calculation.

Defect density is calculated as total defects divided by the size of the software (e.g., lines of code).

2fill in blank

medium

Complete the code to calculate defect detection rate given defects found and total defects.

Testing Fundamentals

detection_rate = defects_found / [1]

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

Adefects_found

Btotal_defects

Ctest_cases

Dtime_spent

Attempts:

3 left

💡 Hint

Common Mistakes

Dividing defects found by defects found (always 1).

Using test cases or time instead of total defects.

Defect detection rate is the ratio of defects found to total defects present.

3fill in blank

hard

Fix the error in the code to calculate defect density correctly.

Testing Fundamentals

defect_density = [1] / size

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

Asize

Bdefects_found

Ctime

Dtotal_defects

Attempts:

3 left

💡 Hint

Common Mistakes

Using size as numerator causing density to be 1.

Using defects found instead of total defects.

The numerator should be total defects, not size or other values, to calculate defect density.

4fill in blank

hard

Fill both blanks to calculate defect detection rate as a percentage.

Testing Fundamentals

detection_rate = ([1] / [2]) * 100

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

Adefects_found

Btotal_defects

Ctest_cases

Dtime_spent

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping numerator and denominator.

Using test cases or time instead of defects counts.

Defect detection rate is defects found divided by total defects, multiplied by 100 to get percentage.

5fill in blank

hard

Fill all three blanks to create a dictionary with defect density and detection rate.

Testing Fundamentals

metrics = {"density": [1] / [2], "detection": ([3] / total_defects) * 100}

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

Atotal_defects

Bsize

Cdefects_found

Dtime_spent

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up variables for density and detection.

Using time_spent instead of size or defects.

The dictionary calculates defect density as total defects over size, and detection rate as defects found over total defects times 100.