Measurement Terms
Good Assessments
Scales by the Numbers
Testing Testing
OAE What?
100

This scale is divided into categories, no values are assigned, categories are simply different fromone another

Nominal Scale

100

an assessment tool that produces consistent results has this

Reliability

100

1 to 99%

Percentile

100

CA is generally written as 2 numbers separated by a hyphen. 6-11, someones birthday is close!

Chronological Age

100

Transition goals should be based on these

Age appropriate transition assessments (AATA's)

200

In this scale, persons or subjects are placed in sequence with no assumptions of distance between them.

Ordinal

200

An assessment tool that actually measures this it purports to measure has this.

Validity

200

1-9

Stanine

200

These scores are the first to be computed by the tester. They have not be cooked yet!

Raw scores

200

The testing of this type of language often includes the setting, event, and audience. TOPL for short.

Pragmatics

300

In this type of scale, there are equal ranges between units of measurement, but the scales do not begin with a true zero.

Interval

300

Content Validity is defined as the extent to which the sample items are "this" to the population it intends to measure.

Representative

300

-4 to +4

z Score

300

During the test administration, the tester should be observing "this" to evaluate the students score

Behavior

300

The fifth edition of this test (PPVT-5) is an individually administered, norm-referenced instrument that assesses receptive (hearing) vocabulary of children and adults. Peabody loves pictures!

Peabody Picture Vocabulary Test

400

This scale begins with a true zero and have equal intervals between units of measurement. Considered one of the most sophisticated. Impressive! 

Ratio

400

If you want to foresee the students performance on future test or school readiness. Your assessment better have it.

Predictive Validity

400

10 to 90 (50 is the mean)

t score

400

Percentile ranks are preferable to age and "these" equivalents because they are comparative scores.

Grade Level

400

The Peabody Test (PIAT) Uses a Reading Comprehension subtest and measures a child's ability to derive meaning from sentences that are read silently.

Individual Achievement

500

When using interval data, a better estimate of the variation of scores, other than range, is this.

Standard deviation

500

When determining inter-rater reliability, the minimum rate of agreement is this percentage. Sounds like an IEP goal!

80%

500

On a normally distributed scale, this percentage of scores falls within 2 standard deviations of the mean.

95%

500

Results obtained under nonstandard conditions should be reported as these

Alternate Scores

500

IQ tests and student labels of disability do not answer this key question every teacher should strive to know.

How do my students learn

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