By assessment, one can assign developmental quotient (DQ) for any developmental sphere. It is calculated as the ?

Correct option is C

Ans. (c) Sol. The correct answer is (c) average age at attainment by obtained age at attainment × 100.
The Developmental Quotient (DQ) is a measure used to assess the developmental progress of a child across various developmental domains. It is calculated by comparing the child’s obtained age at attainment (the age at which the child achieves certain developmental milestones) with the average age at attainment (the typical age for achieving those milestones). This comparison is then multiplied by 100 to obtain the DQ.
Formula for DQ:

Explanation of each option:
· (a) average age at attainment + obtained age at attainment × 100: This option incorrectly adds the average and obtained ages, which is not how DQ is calculated.
· (b) average age at attainment - obtained age at attainment × 100: This option incorrectly subtracts the obtained age from the average age, which is not the correct formula for DQ.
· (c) average age at attainment by obtained age at attainment × 100: Correct answer. This is the correct method for calculating the Developmental Quotient (DQ), where the obtained age is divided by the average age and then multiplied by 100.
· (d) average age at attainment by obtained age at attainment: This option does not involve multiplying by 100, so it is not the complete or correct formula for calculating DQ.
Thus, the correct method is to divide the obtained age by the average age and then multiply by 100.