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ECPSE 703

Final Exam Chapters 3-4

QuestionAnswer
On a normal curve, approximately what percentage of scores is found within 1 standard deviations of the mean (consider scores both above and below the mean)? 68%
On a normal curve, approximately what percentage of scores is found within 2 standard deviations of the mean (consider scores both above and below the mean)? 95%
On a normal curve, approximately what percentage of scores is found within 3 standard deviations of the mean (consider scores both above and below the mean)? 97.7%
Determine the range of the following distribution of test scores: 52, 56, 68, 72, 74, 78, 80, 82, 82, 86. 34
Determine the mean of the following distribution of test scores: 52, 56, 68, 72, 74, 78, 80, 82, 82, 86. 73
Determine the mode of the following distribution of test scores: 52, 56, 68, 72, 74, 78, 80, 82, 82, 86. 82
Determine the median of the following distribution of test scores: 52, 56, 68, 72, 74, 78, 80, 82, 82, 86. 76
A person's weight is measured on what kind of scale? Ratio scale
A clock or the temperature uses what kind of scale? Interval scale
Percentiles represent which kind of scale? Ordinal scale
Aggregating students by demographic data such as race/ethnicity and gender relies on what kind of scale? Nominal scale
Tests designed to compare and individual student's scores with national averages are called _______. Norm-references tests
True or false: raw scores are derived scores. False
True or false: language quotients are derived scores. True
True or false: age or grade equivelants are derived scores. True
True or false: percentile ranks are derived scores. True
What is a derived score? A numerical description of an individual's performance in terms of norms.
Statistics used to organize and describe data are called _____. Descriptive statistics
What are measures of central tendency? Methods to determine how scores cluster. They are distributed around a numerical representation of the average score.
A hypothetical representation of the way test scores would fall if a particular test was given to every single student of the same age/grade in the population for whom the test was designed. Normal distribution
This measure helps determine how much distance from the mean is typical and how much is considered significant. Standard deviation
This measure describes how spread out the scores in a distribution are from the mean. Variance
What is a frequency polygon? A graph with test scores represented on the hotizontal axis and the number of occurences represented on the vertical axis.
Cognitively, culturally, or linguistically diverse groups may have a different mean score than reported for most of the population. When this happens, it is called a ______. Mean difference
What is reliability? The consistency of an assessment meaasure.
r = +.91 is best described as ____. A strong positive relationship between variables.
r = -.21 is best described as ____. A weak negative relationship between variables.
Smoking leads to an increased risk of lung cancer is what type of correlation? Positive correlation
What is a scattergram? A graphic representation of a correlation.
Research has proven that the Best Achievement Test in America had poor internal consistency. What does that mean? The test items do not repeatedly measure what they say they measure.
Mr. Jones, the classroom teacher, administers a test to Joey in September and then again in October. Joey's scores are one point off. This test could be said to have ____. Test-retest reliability
Mrs. Rodrigues administers version A of an achievement test in September and then version B in May to determine progress for IEP reporting. Researchers must determine _________ reliability in order to ensure that Version A and B are the same. Alternate forms reliability
Mark and Eve collect data on the same student using the same assessment and find their data is almost exactly the same. It could be said that Mark and Eve have ______. Interrater reliability
Alternate forms reliability is also known as ______. Equivelant forms reliability
Ms. Carol wants to make sure that her exam is equally difficult. She administers half of the test to her class on Monday, and the other half of the test two weeks later. She splits the test by pulling every other question. Ms. Carol has used ______. Split-half reliability
Ms. Morgan reviews an assessment that has a correlation coefficient of 0.44. Should Ms. Morgan use this test? Why? No; the correlation coefficient is too low.
Ms. Morgan reviews an assessment that has a correlation coefficient of 0.74. Should Ms. Morgan use this test? Why? Yes; the correlation considered adequate.
What happens to the range of scores when comparing obtained and true scores? The obtained score provides a narrower confidence interval.
When a test actually measures what it purports to measure, we say it has good ______. Validity
You create a new measure of reading comprehension and want to test it's validity. You compare the results of your measure to existing validated measures of reading comprehension and find that yours compares well with them. Your new measure has good ____. Criterion-related validity
A test is said to accurately assess specific psychological and personality traits, psychological concepts, attributes, and theoretical characteristics. This assessment is likely to have good ____. Construct validity
A school psychologist wants to see if a new self-assessment has validity. They ask a group of students to take the new assessment. The student's take the test currently in use the next day. If the test results are similar, these tests have _____. Concurrent validity
The SAT and GRE are good examples of ______ validity. They assume what a student's future ability might be. Predictive validity
A final exam that accurately tests for all of the information learned throughout the entire semester can be said to have _____. Content validity
Mrs. Beth noticed that many of the students in her class who are Latino answered the same questions wrong when administering a standardized assessment. Mrs. Beth may be noticing ____ in the test criterion. Item bias
Tests must be both _____ and _____ before being used on students valid and reliable
Created by: artransport
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