When you review your results you can see whether or not they fit your hypothesis and if it failed then you can reformulate it to create a new hypothesis and start new research. You can also see whether something doesn't fit or if you made a mistake. <span />
-Avoiding drugs can keep you out of jail -Working hard leads to achievement -Listening to rap music -Volunteering at the Boys or Girls Club lets you share your knowledge and skills -Tutoring other students shares your knowledge