Question

Hey friends, can you pls help me with this
question?​

Answer 1

Answer:

Step-by-step explanation:

Weight of the students ( in kg ) = 20 21 22

Frequency ( f ) = 11 + 8 + 1 = 20

Mean = x = ( 20 × 11 ) + ( 21 × 8 ) + ( 22 × 1 ) / 20

= 220 + 168 + 22 / 20

= 410 / 20

= 20. 5