@oristarA,
No, because a "700 strong" group would mean that approximately 700 people are carefully examining the data. Instead, there are approximately 900 people carefully examining the data, so it is a "900 strong" group. If they had 50 people carefully examining the data, the group would be "50 strong". If they had approximately 20,000 people carefully examining the data, they would be "20,000 strong".
And so on.