A ________ scale is one in which equal differences in scores ...

[geodog55]

A ________ scale is one in which equal differences in scores represent equal differences in amount of the property measured but with an arbitrary zero point.
 
  a. Nominal
  b. Ordinal
  c. Interval
  d. Ratio

Question 2

List the three ways in which event recording can be converted for reporting and graphing and explain how each conversion is used.
 
  What will be an ideal response?

[nyrave]

Answer to Question 1

c

Answer to Question 2

Three ways event recording can be converted for reporting and graphing:
(a) Number of occurrences of a behavior if time is consistent across sessions. If the teacher wanted to record and graph the number of times John was out of his seat, she would simply recorded the number of occurrences each day during the given time period that John exhibited the behavior. She would then graph day's data as a separate data point.
(b) Number correct or percent correct if consistent number of opportunities to respond. If the teacher wanted to teach a student multiplication facts for the number three through nine, she could record correct responses on each of the multiplication facts for the number three through nine across several days. Each day the total number of correct multiplication facts could be tallied and graphed based on total number correct or percent correct if the total number correct was divided by the total possible number correct and multiplied by 100.
(c) Percent correct if the number of opportunities to respond varies. Ms. Smith wanted to record Stacey's progress on weekly math quizzes. She recorded Stacey's score as a percent correct because the number of questions on the quizzes varied each week. To calculate the percent correct each week she took the number of correct responses and divided it by the total number of questions and multiplied by 100. She then recorded the percent correct for each week on the graph.