Question

mean height of 11 friends is 155.2cm if one friend whose height is 158cm leaves find the new mean height​

Answer 1

Answer:

154.92

Step-by-step explanation:

Number of Friends = 11

Mean height of all friends = 155.2 cm

Total height = 155.2 x 11

                    = 1707.2 cm

Height of one friend who left = 158 cm

total height now = 1707.2-158

                           = 1549.2 cm

Average height of remaining friends = 1549.2/10

                                                             = 154.92 cm