Analyze Test Results
Mr. May notices that the mean is about the same for the test scores from his five algebra classes, but one class has a much broader range of scores. Which statistic should Mr. May use to determine the magnitude of the range of scores? _________________
If a multi-disciplinary team is going to formally assess a student suspected of having a mild mental disability, there are many pieces to be completed. Among these must include at least three standardized measures, one of which is a individualized cognitive evaluation using a test like the Wechsler Intelligence Scale for Children – V. Please note the two other basic areas that must be assessed AND a name of an instrument for each of the two other areas that would provide standardized data.
The results of most standardized achievement tests (like the Woodcock Johnson III) and intelligence tests (like the WISC V) are reported in terms of standard scores with a mean of 100 and a standard deviation of 15. a.If a child obtains an IQ of 130, how many standard deviations above or below the mean is that score? b.If this same child obtains a basic reading score of 70, how many standard deviations above or below the mean is that reading score? c.What would be a reasonable beginning hypothesis about this child given only the above two pieces of information ?
Many tests that are reviewed in ARCs (Admissions and Release Committees)
are reported in terms of T scores. T scores have a mean of 50 and a standard
deviation of 10.
If a child obtains a T score that is 2 standard deviations above the mean on the overall ADHD Index on the Conners’ Teacher Rating Scale, what is that score?
Does that score mean the child has many characteristics similar to children who have ADHD, hardly any symptoms that are similar to children who have ADHD, or some characteristics of children who have ADHD?
Can one test confirm or deny that a child has ADHD?
