What is the average age for babies to start teething, sitting up by themselves and scooting?

There are many answers to this question. But based on my own children (2) They both stated teething at ~6 mos, sitting unisted ~8-9 mos, and scooting/crawling/dragging ~8-9 mos, cruising ~10 mos and walking ~1 year. I don't know how average that is but that was my children. Best of luck.