Which phase in the systems life cycle involves installing the new system and training people?

The phase in the systems life cycle that involves installing the new system and training people is known as the Implementation phase. Here are the steps involved in this phase:

1. System Installation: This is the first step in the implementation phase. It involves setting up the new system in the organization. This could mean installing new hardware, like servers or workstations, or it could mean installing new software applications.

2. Data Conversion: If the new system is replacing an old one, the existing data must be converted to a format that the new system can use. This can be a complex process, especially if the old and new systems use different data formats.

3. System Testing: Before the new system can be fully implemented, it must be tested to ensure it works as expected. This involves running various tests on the system and fixing any issues that arise.

4. User Training: This is a crucial step in the implementation phase. The people who will be using the new system need to be trained on how to use it. This can involve formal training sessions, or it could be more informal, with users learning as they use the system.

5. System Changeover: This is the final step in the implementation phase. It involves switching from the old system to the new one. This can be done all at once (a "big bang" approach), or it can be done gradually, with the old and new systems running in parallel for a while.

After the implementation phase, the system enters the maintenance phase, where it is monitored and any necessary adjustments are made.