Securities and Exchange Commission

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum

The estimated measure of the minimum 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.

Compare To Other Companies

Annual (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.837	2013-12-18	10-K	2013	FY	2011-10-01	2012-09-30	CY2012
0.713	2013-12-18	10-K	2013	FY	2012-10-01	2013-09-30	CY2013
1.009	2015-12-29	10-K	2015	FY	2014-10-01	2015-09-30	CY2015
1.104	2017-12-20	10-K	2017	FY	2015-10-01	2016-09-30	CY2016
1.282	2017-12-20	10-K	2017	FY	2016-10-01	2017-09-30	CY2017

All Reported Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.853	2013-05-09	10-Q	2013	Q2	2011-10-01	2012-03-31
0.837	2013-08-13	10-Q	2013	Q3	2011-10-01	2012-06-30
0.837	2013-12-18	10-K	2013	FY	2011-10-01	2012-09-30	CY2012
0.713	2013-05-09	10-Q	2013	Q2	2012-10-01	2013-03-31
0.713	2013-08-13	10-Q	2013	Q3	2012-10-01	2013-06-30
0.713	2013-12-18	10-K	2013	FY	2012-10-01	2013-09-30	CY2013
1.009	2015-12-29	10-K	2015	FY	2014-10-01	2015-09-30	CY2015
1.104	2016-12-20	10-K	2016	FY	2015-10-01	2016-09-30
1.104	2017-12-20	10-K	2017	FY	2015-10-01	2016-09-30	CY2016
1.282	2017-12-20	10-K	2017	FY	2016-10-01	2017-09-30	CY2017