If the number of quantities in group A is 10 and in group B is 8, and their individual average is 24 and 16 respectively, find the combined average of the two groups.
| Question | If the number of quantities in group A is 10 and in group B is 8, and their individual average is 24 and 16 respectively, find the combined average of the two groups. | |
| Type | multiple_choice | |
| Option | 20.44 | correct |
| Option | 18.22 | incorrect |
| Option | 16.22 | incorrect |
| Option | 18.66 | incorrect |
The combined average of the two groups is =
=(10*24+8*16)/(10+8)
= (240+128)/18
= 368/18
= 20.44