Wyckoff said,
what is intensity of action (activity) ?
Thus far we have not considered the volume of trading nor the activity
because it is better, first, to learn to judge the factors just enumerated — i.e.,
Price Movement, Time and Comparative Lifting Power or Pressure.
After you have mastered these, you should begin the study of volumes
and the intensity of action (activity) in connection therewith (Pgs. 19 to 22). This
will give you added understanding and power.
...
Since the average trader and investor does not have the time nor equipment
necessary to secure the data for computing activity and volume, these significant
figures are included in the Wave Chart of Tape Readings published by us
daily for the convenience of subscribers and issued in the form of daily "Tape
Readings" with detailed comment upon each day's market action.
what is intensity of action (activity) ?