Adata value is considered? if its? z-score is less than minus? 2 or greater than 2.

The word that would best fit in the given is "unusual". The z-score is a measure of how close the given data point is to the mean of the values given with the standard deviation. When we say that the data has a z-score of -2 and 2 then, they are 2 standard deviations away from the mean value. 

What’s the question here? what have you been learning about?

Here are the answers to the ones that i could see.