How is total count IOA calculated?

The correct method for calculating total count Interobserver Agreement (IOA) involves taking the sum of agreements between two observers and dividing it by the total number of trials recorded by both, then multiplying by 100 to express it as a percentage. This reflects the level of consistency between the observers regarding the count of behaviors or events.

When you adding the agreements, you essentially quantify how many times both observers agreed on the occurrence of a behavior out of the total observations made. This strategy effectively measures the reliability and consistency of the data collected by multiple observers.

In other options, inaccuracies arise in the proposed calculations. For instance, options suggesting simple ratios or averages do not accurately capture the essence of agreement between observers and may lead to misleading conclusions about the reliability of the recorded data. Thus, relying on the correct formula allows for a clear assessment of how consistently the behaviors are counted across observers.