C-03 Measure Occurrence (e.g., Count, Frequency, Rate, Percentage) - Part 1 - Frequency & Rate

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Frequency measures are most appropriate when

(all of the above) - 1. responses have a discrete beginning and end. 2. responses do not vary significantly in duration. 3. the rate makes it possible to count each response.

"The student read 30 words during reading yesterday and 35 words during reading today," is a measure of

frequency

Sometimes rate and frequency are differentiated. Rate always refers to the

number of occurrences divided by time.

Use frequency only when

observation length and opportunities to responded remain constant.

Rate should be used for measures of

proficiency.

"The student reads 30 words a minute," is a measure of

rate.

Daily playtime ranges from 30 to 60 minutes. A suitable measure for appropriate interactions might be

rate.

Frequency measures are most appropriate when

responses have a discrete beginning and end.

Rate measures

should not be used with discrete trial data, because discrete trial behaviors are controlled by a given opportunity to respond.

Frequency measures are most appropriate when

the rate makes it possible to count each response.

During a 10 minute observation, the first instance of SIB occurred 2 seconds after the staff request. There were no additional instances after a second, third, and fourth staff request. The instance of SIB lasted 5 seconds. What was the rate of SIB?

.1 per minute

During a 10 minute observation, the first instance of SIB occurred 2 seconds after the staff request and the second instance occurred 3 seconds after a second staff request. There were no additional instances after a third and fourth staff request. Each instance of SIB lasted 5 seconds. What was the rate of SIB?

.2 per minute

During a 1 minute observation, the first instance of SIB occurred 2 seconds after the staff request. There were no additional instances after a second, third, and fourth staff request. Each instance of SIB lasted 5 seconds. What was the rate of SIB?

1 per minute

During a 2 minute observation, the first instance of SIB occurred 2 seconds after the staff request. The second instance occurred 4 seconds after a request. Each instance of SIB lasted 1 second. What was the frequency of SIB?

2 instances

During a 2 minute observation, the first instance of SIB occurred 2 seconds after the staff request. The second instance occurred 3 seconds after a request, the third instance occurred 1 second after the request, and the fourth instance occurred 2 seconds after the staff request. Each instance of SIB lasted 5 seconds. What was the rate of SIB?

2 per minute

During a 1 minute observation, the first instance of SIB occurred 2 seconds after the staff request. The second instance occurred 3 seconds after a request and the third instance occurred 1 second after the request. Each instance of SIB lasted 5 seconds. What was the frequency of SIB?

3 instances.

During a 1 minute observation, the first instance of SIB occurred 2 seconds after the staff request. The second instance occurred 3 seconds after a request and the third instance occurred 1 second after the request. Each instance of SIB lasted 5 seconds. What was the rate of SIB?

3 per minute

During a 1 minute observation, the first instance of SIB occurred 2 seconds after the staff request. The second instance occurred 4 seconds after a request, the third instance occurred 3 seconds after a request, and the fourth instance occurred 1 second after the request. Each instance of SIB lasted 1 second. What was the frequency of SIB?

4 instances

During a 1 minute observation, the first instance of SIB occurred 2 seconds after the staff request. The second instance occurred 3 seconds after a request, the third instance occurred 1 second after the request, and the fourth instance occurred 2 seconds after the staff request. Each instance of SIB lasted 5 seconds. What was the rate of SIB?

4 per minute


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