Apprasials Quiz 1 Chapter 2

If Sally has a percentile score of 53, you would interpret this score saying that:

53 percent of the group tested had a score at or below Sally's

Approximately what percent of the norming group in a normal distribution falls between two standard deviations below the mean and two standard deviations above the mean?

95%

A frequency polygon is a:

graphic representation of a frequency of score

Norm-referenced instruments are to criterion-referenced instruments as:

group comparison

When scores in a distribution are averaged, the statistic is called the:

mean

The correct order of the following scales of measurement, from least precise to most precise, is:

nominal, ordinal, interval, ratio

Ranking your classmates on their performance on an exam is an example of what type of scale?

ordinal

The most widely used statistic of variability in measurement is the

standard deviation

In norm-referenced assessment, the word norm refers to

the group of individuals who took the instrument, to which others score are later compared

John is a second grade student who, on an achievement test, received a grade equivalent score of 4.5 (fourth grade-fifth month) on the reading comprehension subtest. As a counselor, you would interpret this score as an indicator that John should be:

the score could not be interpreted without examining how the instrument was developed

What are all standard scores based on?

z-scores

What is the point on the scale that has an equal number of scores above and below it?

Median

In a distribution of scores, what do we call the score that occurs most frequently?

Mode

If a test taker made a score of 40 on a 100-item test, what interpretation can we make of this score?

Nothing can be interpreted without additional information

What is the relationship between variance and standard deviation?

Standard deviation is the square of variance

Which of the following statements is most accurate concerning stanines?

Stanines can be misunderstood because individuals do not understand that they represent a range of scores

Which of the constructs cannot be measured using a ratio scale?

Temperature

Which of the following characteristics is NOT true of a nominal scale?

It is possible to determine the mean of nominally scaled variables

Interval scales are characterized by

Equal intervals

What is one drawback of using the range as a measure of variability?

It can be significantly influenced by extreme scores

A normalized distribution of scores has

a single peak in the center and the same score for the mean, mode, and median.

Norm-referenced instruments are most useful for

comparing an individual's performance with other individuals.

An academic achievement test is developed to measure mastery of a multiplication table. Mastery is defined as getting 100% of the multiplication items correct. This instrument is an example of a:

criterion-referenced test