Why is the wireless network data transfer rate is slow?

Questions and Answers regarding wireless connections.

There are two possibilities:
1.    User is far from the AP (access point). Closer to AP means data transfer rate is high.  A user can see the variable rates ranging from 11Mbps to 1 Mbps.
2.    Since wireless network is shared network, its data transfer capability depends on how many users are using the same access point. If more people use the same access point then users might feel slow connection