In May $2011,$ Internet Explorer reversed its trend in the United States and gained usage share $($the percentage of users using a particular Internet browsers$)$ In June of $2011,$ the trend reversal became global Internet Explorer gained $0\mathrm{.}57\%$ in June across all operating systems with Internet Explorer $80$ gaining $086\%$ globally. The gains for Internet Explorer came primarily at the expense of Mozilla Firefox $(-0\mathrm{.}51\%)$ Google Chrome's pace of usage share gains slowed to $+02\%$ for June The gains for IE were the largest in Europe and Asia

Internet Explorer in Europe $+088\%$

Internet Explorer in Asia $+081\%$

This increase may be the result of a marketing campaign. In early June, Microsoft launched their "Confidence" campaign aimed at showing the security features of Internet Explorer

$8.$ The results stated above likely to have come from what type of data collecting method?