Question

please send me a answer fast help me

Answer 1

this is the answer of this question

Answer 2

Smritilok2003Smriti AceHi friend,

Here is your answer,
_____________________________________________________________

         Mean =    Sum of observations   
                      Number of observations

Mean of x₁ , x₂ = 6
            x₁+x₂   = 6
               2
            x₁+x₂ = 12                 ---------------------------------- ( i )
Mean of x₁ , x₂ , x₃ is 7 
              x₁+x₂+x₃ = 7
                    3
              x₁+x₂+x₃ = 21
               12 + x₃   = 21                 [From ( i )]
                         x₃ = 9
_____________________________________________________________

★★★★ HOPE THIS HELPS YOU ★★★★
★★★★ PLS MARK ME AS BRAINLIEST ★★★★