As i watch television for a four hour stretch one evening, i record the number of aggressive incidents that occur during each one hour period. i am taking a(n) measure of the behavior.

When a person watches television for a long stretch of time in order to observe and then, record the total aggressive incidents occurring during that period is a good example of the rate measure of the behavior. The rate measure refers to the measure of the frequency of the concerned events occurring in the defined period of time. Since, the person is looking for the aggressive behavior on television during his four hour watching, this is a rate measure.

they are known to reach a speed of 21 miles per hour