Why is a full format more beneficial than a quick format when preparing for a clean OS installation?

Why is a full format more beneficial than a quick format when preparing for a clean OS installation?

• A full format is the only method of installing Windows 8.1 on a PC that has an operating system currently installed.
• A full format will delete files from the disk while analyzing the disk drive for errors.
• A full format will delete every partition on the hard drive.
• A full format uses the faster FAT32 file system, whereas a quick format uses the slower NTFS file system.
  

  Explanation: A full format removes files from a partition while scanning the disk for bad sectors. A quick format will remove files from a partition but does not scan a disk for bad sectors.