Answer: d. 4, 4.53%
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 =
![(least\ frequency)/(Total)*100](https://img.qammunity.org/2021/formulas/mathematics/high-school/hluh642qshbwfbuv6hjdswjp0ffk40640z.png)
![(68)/(1500)*100=4.53\%](https://img.qammunity.org/2021/formulas/mathematics/high-school/34owx2j7b16rhasr2d8wwda19w4wcgn45p.png)
Hence, the correct answer is d. 4, 4.53%