STOCK OPTIONS (Details)	9 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Minimum
Expected volatility	45.38%	47.29%
Risk-free interest rate	0.30%	0.30%
Expected life (years)	2 years 6 months	2 years 6 months
Maximum
Expected volatility	65.49%	97.48%
Risk-free interest rate	2.35%	1.05%
Expected life (years)	3 years 3 months	3 years 3 months

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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