According to Ruppelt after reviewing the orginal Project Grudge data, every scientist and engineer wanted to give top priority to getting reasonably
accurate measurements of the speed, altitude, and size of the reported UFO's. This is what the report means by a "statistical analysis to obtain a
pattern or trend."
As for the meeting, again according to Ruppelt:

Everyone present at the meeting agreed—each had read or had been briefed on these incredible reports. In fact, two of the people present had
seen UFO's.
Before the meeting adjourned, Colonel Dunn had one last question. He knew the answer, but he wanted it confirmed. "Does the United States have a
secret weapon that is being reported as a UFO?"
The answer was a flat "No."
Source