For newbies: Moving averages as in indicator.

[murray t turtle]

On 1) Any MA can be made so it "crosses over", so that tell you it is relative. So therefore the notion of "crossing" is arbitrary, group thinking aside.

On 4) These people are not Newbies,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

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MA crosse$ may have worked better when comissions were higher; not because making your broker rich is the key. Fewer people traded then.
BUT a 50dma crossing a 200 day moving average is still valuable info+ it seldom happens. 50 week ma lags a lot