JAMB - Economics (2018 - No. 54)
| X | 8 | 10 | 12 | 16 | 18 | 20 | 24 |
| F | 2 | 1 | 4 | 3 | 3 | 1 | 6 |
From the table, Calculate the mean?
24.0
17.0
18
27.2
Explicación
Mean= ∑fx/∑f
=(16+10+48+48+54+20+144)/(2+1+4+3+3+1+6)
=340/20
=17.0
By calculation, the mean of the distribution is not 18