Understanding MT4 Volume and ATR indicator

 

Hello,

MT4 Volume shows number of Tick per Candle? For example, if volume value is 20 that means 20 times it Tick on the current candle?

ATR Indicator shows Price Change difference per Candle? For example, here ATR Period is 14 (Means last 14 Candle) and ATR Value 1.15 (XAUUSD) means 115 Point on avg change per candle based on avg data from last 14 candle?

I am correct?