Question

Find the mean- 3+2x, 4+3x, 5+x,1+3x,5+3x and 6+0x​

Answer 1

Answer:

2X + 4

Step-by-step explanation:

Mean = Sum of observations / Number of observations

Sum of observations = (3 + 2X)+ (4 + 3X) + (5 + X) + (1 + 3X) + ( 5 + 3X ) + ( 6 + 0X)

                                  =  2X + 3X + X + 3X + 3X + 0X + 3 + 4 + 5 + 1 + 5 + 6

                                  = 12 X + 24

Number of observations = 6

Mean = ( 12 X + 24 ) / 6

         = ( 6 x 2X + 6 x 4) / 6     Taking 6 common from numerator

         = 6 ( 2X + 4 ) /  6

         = 2X + 4