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

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Published on 16 Apr 2013

School

Department

Course

Professor

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

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

## 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.