Software Development Rules of Thumb

• Spend equal time between analysis, design, implementation, and test.
• An average programmer can produce about 1,000 lines of code per month.
• Testing, which covers 80% of the code, finds 90% of the bugs, at 20% the cost of doing total coverage.
• You will discover about 1 bug for every 100 lines of code during testing.
• You will discover 1 bug in the released product for every 10 bugs discoverd during testing.
• You will be lucky to fix two bugs a day.