The following table shows Net National Income (in Lac Crore) and Per capita…
2023
The following table shows Net National Income (in Lac Crore) and Per capita Net National Income (in thousand) of India during the 5 year period from the year 2015-16 to 2019-20. Based on the data in the table, answer the questions that follow:
Year | Net National Income (in Lac Crore rupees) | Per capita Net National Income (in thousand rupees) |
|---|---|---|
2015-16 | 122 | 95 |
2016-17 | 136 | 105 |
2017-18 | 151 | 115 |
2018-19 | 167 | 126 |
2019-20 | 177 | 132 |
What is the average per capita Net National Income (in thousand rupees) per year?
Answer: B. 114.6 — ConceptThe arithmetic mean of n observations is their total divided by n. For data covering equally weighted years, add the yearly values first and then…
- A.
103.25
- B.
114.6
- C.
110.3
- D.
108.6
Show answer & explanation
Correct answer: B
Concept
The arithmetic mean of n observations is their total divided by n. For data covering equally weighted years, add the yearly values first and then divide by the number of years.
Application
The five per-capita values are 95, 105, 115, 126, and 132 thousand rupees.
Their total is 95 + 105 + 115 + 126 + 132 = 573 thousand rupees.
There are 5 years, so the mean is 573 ÷ 5 = 114.6 thousand rupees per year.
Cross-check
Multiplying 114.6 by 5 returns 573, the total of the five entries; it also lies between the smallest and largest yearly values.
Result
Therefore, the average per-capita Net National Income is 114.6 thousand rupees per year.