Answer: d. 4, 4.53%
Step-by-step explanation:
Given table :
Number of Children Frequency
0 325
1 212
2 660
3 151
4 68 ← Least frequency
5 or more 84
Total = 1500
or Sample size of couples = 1500
The number of children occurred the least frequently = 4 [Minimum frequency is 68 at number of children=4]
Percentage =[tex]\dfrac{least\ frequency}{Total}\times100[/tex]
[tex]\dfrac{68}{1500}\times100=4.53\%[/tex]
Hence, the correct answer is d. 4, 4.53%