# Psychology 2062A/B Chapter Notes - Chapter 14: Descriptive Statistics, Standard Deviation, Standard Score

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Published on 16 Apr 2013
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Volvo effect: because standardized test scores are so highly correlated with parents
wealth you might easily look at what car parents drive to determine how likely a given
student would be to do well on a standardized test
Standardized tests: published tests that teachers administer and interpret in customary
and established ways
Achievement tests: tests intended to measure what students have learned in school as a
result of instruction, based on what students are expected to learn
Aptitude test: an examination of an individuals mental ability intended to predict how a
person might perform in an educational setting
common paper-and-pencil approach, 0.90-0.97 reliability
Norming group: a large random, nationally representative collection of scores on a norm
referenced test; the norming group is the benchmark that student scores are compared to
on the test
Test takers rights: ethically prepare students to take the assessments, admin the tests in
an appropriate manner and correctly interpret the rest results
High stakes assessment: a standardized test with important consequences attached to the
results of the assessment, can have unintended effects on children
Raw score: number of items answered correctly on a test
Items: questions on standardized test
Criterion-referenced: interpreting test scores in terms of what proportion of the pre-
established criteria or content have been correctly answered by the test taker
Percent-correct score: the percent of questions the student got correct on the
assessment, must know the maximum possible score on the test
Cut score: the sore a student needs to achieve in order to pass a standardized criterion-
reference test
Norm-referencing: interpreting test scores by comparing the text takers result to the
result of another group of text takers scores
Norms: the set of scores to which any single score is compared
Descriptive statistics: an area of statistics interested in providing ways of helping you to
describe information or data
Measures of central tendency: measures of the middle of a data set the three measures
of central tendency are mean median and mode
Mean: the average score of a group of scores
Median: the middle occurring scores in a group of scores
Mode: score that occurs most often in a group of numbers
Range: the difference between the highest and lowest score-plus one-in a set of student
data
Standard deviation: a measure of variability of a data set
Symmetry: both halves of the normal curve appear identical
t-score: a standard score used in norm-referenced tests with a mean of 50 and a standard
deviation of 10
stanine scores: standard score used in norm referenced tests with a mean of 5 and a
standard deviation of 2
NCE scores: normal curve equivalent score is a standard score that has a mean of 50 and
a standard deviation of 21
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## Document Summary

Volvo effect: because standardized test scores are so highly correlated with parents wealth you might easily look at what car parents drive to determine how likely a given student would be to do well on a standardized test. Standardized tests: published tests that teachers administer and interpret in customary and established ways. Achievement tests: tests intended to measure what students have learned in school as a result of instruction, based on what students are expected to learn. Aptitude test: an examination of an individuals mental ability intended to predict how a person might perform in an educational setting. Computer adaptive assessment: test administered by a computer instead of the more common paper-and-pencil approach, 0. 90-0. 97 reliability. Norming group: a large random, nationally representative collection of scores on a norm referenced test; the norming group is the benchmark that student scores are compared to on the test.