Only Statement 2 is surely correct.
because there maybe chances that the line L1 and L3 lies above the line L2 and they can also fulfill the condition of perpendicularity so we can't be sure about statement 3 & statement 1 is clearly incorrect
82 tens in the same thing as 820 because if you multiply 82 by 10 you get 820
With dot plot if it’s symmetrical its the mean and MAD, so i think that.
