it is cleared that more respondents are in favor of that test cases increases quality of software after implementation. 6% respondents says it increases quality after implementation of test cases is under 0-20%, 6% respondents says it increases quality after implementation of test cases is under 21-40%,42% respondents says it increases quality after implementation of test cases is under 41-60%,36% respondents says it increases quality after implementation of test cases is under 61-80%