Interval level and ratio level measurements are often lumped together under the term
quantitative measures
The only temperature scale that is at a ratio level of measurement is
kelvin
A man wants to buy a used car. The salesperson says, "This is the best car on the lot for you." What level of measurement is this claim?
Ordinal
The only level of measurement with a true 0 point is
Ratio
What is the correct order of measurement, going from weakest to strongest?
Nominal, ordinal, interval, ratio
An experimenter compares the number of passes completed for different football players. The different football players represent which level of measurement?
Nominal
30 people with cancer are found, and 10 are randomly assigned to a group that receives chemotherapy, 10 to a group that receives radiation therapy, and 10 receive no treatment. After 2 years, the researchers count the number of people in each group who ha
Nominal
The time for a speed runner to run 60 yards is timed, as a function of whether or not he or she had a bowl of spaghetti before running the race. What level of measurement is whether or not the runner ate a bowl of spaghetti?
Nominal
A cognitive psychologist wants to determine how people learn to play the piano. The psychologist observes one practice session for each of the subjects each week, for a total of six months. He writes down the length of the practice session, the number of
Interval
An educational researcher wants to compare two forms of testing, norm-based testing and mastery testing. All students receive the same lessons, but are assigned randomly to one of the two forms of tests. At the end the psychologist counts the number of st
Nominal
An educational researcher wants to compare two forms of testing, norm-based testing and mastery testing. All students receive the same lessons, but are assigned randomly to one of the two forms of tests. At the end the psychologist counts the number of st
Nominal
A testing psychologist wants to see if musical skill and math skill are related. The psychologist asks the math and music teachers to rank in skill levels ten students that they both share in common. The psychologist then correlates the two rankings. What
Ordinal
A psychologist wants to study a dosage-response relationship between administration of ritalin and changes in students' behaviors. The control group gets no ritalin, and 3 other groups get 1 capsule, 2 capsules, and 3 capsules respectively. Everyday, thea
Interval
Movie reviews that include the options "outstanding", "worthy effort", "so-so", and "a bomb", represent what level of measurement?
Ordinal
The permissible mathematical operations for the interval level of measurement are
addition, subtraction, same/different, more or less
The permissible operations for an ordinal variable are
more/less, same/different
Each level of measurement inherits the permissible operations of the levels that are
below it (weaker)
Which is not true about criterion-referenced testing?
They are useful when one is wishing to compare a score to an individual's peer group
When a test is created based on an absolute standard, this is considered to be
criterion referenced
If I give a student a score based on her test score in percentiles, this would be considered a form of
norm referencing
Which is not true?
All of these are true
Jill Jacobs receives a grade equivalent to a score of 10.6 on a national reading test. She is in the ninth grade. Which statement is most true about Jill?
Jill is doing better than the average student in her grade level.
Which statement is usually not true about all norm-referenced standardized achievement tests?
The standard deviations are always the same, regardless of test publishing company.
Given N = 600, M = 40, SD = 10 (Normal Distribution). Approximately how many individuals would you expect to score between 20 and 30?
84
Age comparisons allows a person to compare hir or her score at a specific age to the mean and standard deviation of individuals in his or her age peer group
True
A personality test that measures self actualizing values uses T-scores. On the "self-awareness" scale, Bethany receives a score of 70, while Edwina obtains a score of 40. At approximately which percentiles do these scores fall?
Bethany: 98, Edwina: 16
Joshua obtained a score of 550 on the SAT's (M=500, SD=100) and a score of 95 on the WAIS-III (M=100. SD=15). On which test did he do better?
SAT
In norm referencing, test scores are compared to a group of individuals, called the norm group or peer group
True
If an individual's percentile rank is 84, he or she gor 84 percent of the items correct
False
A standard deviation of 2 is a percentile rank of about 98
True
The area between +1 and -1 standard deviations on a normal curve would include approxiamately 84% of the population
False
Using z-scores gives an individual the potential of comparing test scores on different types of tests
True
A student received a score on a norm-referenced standardized test that was -2 z-scores below the mean. This person scored better than approximately 16% of his or her norm group
False
On a normally distributed curve, raw scores may become meaningful if you know the standard deviation and mean of the group.
True
Which of the following statements is true about z-scores?
The mean is 0 and the standard deviation is 1.
I give a test in which the mean turns out to be 0 and the standard deviation, 1. If you score on this test is 1.5, then your z-score will be:
1.5
A test has a mean of 70% and a standard deviation of 4%. What z-score would a test score of 76% receive?
1.5
Which of the following is the correct formula for z-scores?
(x - x(mean)) / s
Sharon receives a z-score of 2.5 on ther statistics exam. This means that she is
much above average
Sally's score on a test is exactly equal to the mean of the students who took the test. Her z-score will be:
0
A test is given whose scores range from 0% to 100% correct. Someone with a positive z-score on this test has
A higher score than the average of the other people who took the test
A perceptual-motor test requires the person being tested to put pegs in holes. The tester scores on the basis of the number of errors people make; the more errors, the higher the score. In order to get a job as a fighter pilot Hoe has to do well on his te
-3
True or false: changing a distribution to standard scores, I can set the mean and standard deviation to be anything I want
True
If someone ranked 3 on a test, we can be sure that he did well on that test
False
We can convert a z-score into a percentile by
assuming the scores are normally distributed and looking up the percentile on a table
Various standard scores are created by reversing the algebra that was used to create a z-score.
True