The table shows Net National Income (Lac Crore rupees) and Per Capita Net National Income (thousand rupees) of India, 2015-16 to 2019-20.
| Year | Net National Income | Per Capita NNI |
|---|---|---|
| 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?
The average adds the five per capita figures 95, 105, 115, 126 and 132 and divides by 5.
Their sum is 573, and 573/5 = 114.6 thousand rupees, so the answer is 114.6.
An arithmetic mean weights every year equally, unlike a growth rate that stresses year-to-year change.
The value 103.25 wrongly drops or under-weights the higher later years.
The value 110.3 comes from averaging only a subset of the five years.
The value 108.6 miscalculates the total before dividing.
For a simple yearly average, all listed values are summed once and divided by the count of years.
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