Table:
|  |  | Year Ended March 31, |  |
| --- | --- | --- | --- |
|  | 2019 | 2018 | 2017 |
|  |  | (In thousands) |  |
| Cost of revenues | $234 | $259 | $282 |
| Research and development | 1,310 | 1,141 | 980 |
| Selling, general and administrative | 722 | 670 | 615 |
| Total | $2,266 | $2,070 | $1,877 |
Paragraphs:
Stock-based compensation
The Company recognized $2.3 million, $2.1 million and $1.9 million of stock-based compensation expense for the years ended March 31, 2019, 2018 and 2017, respectively, as follows:
Stock-based compensation expense in the years ended March 31, 2019, 2018 and 2017 included $211,000, $207,000 and $150,000, respectively, related to the Company’s Employee Stock Purchase Plan.
Question:
What was the average cost of revenues between 2017-2019?
Answer: (234 + 259 + 282) / 3 = 258.33