I try to create AVD in Android Studio, there are various skin types available like, HVGA, QVGA, WQVGA400 I don't know what these skin types are, please explain what skin type is to be used while creating AVD.
This table shows the emulator skins that are available in the Android SDK, which you can use to emulate some of the most common screen configurations.
http://developer.android.com/guide/practices/screens_support.html#testing