Chapter 4

Question 1

Age equivalent

Answer 1

It is the individual’s ability; skill, knowledge, or measurement expressed as the age at which most individuals reach the same level (age norm).

Question 2

Chronological Age

Answer 2

This is a very general score that is used to compare the performance of children at the same age with one another.

Question 3

Data

Answer 3

These are individual pieces of factual information recorded and used for the purpose of analysis. It is the raw information from which statistics are created.

Question 4

Deciles

Answer 4

Deciles are similar to quartiles. But while quartiles sort data into four quarters, deciles sort data into ten equal parts:

Question 5

Grade equivalent

Answer 5

Is a very general score that is used to compare the performance of children in the same grade with one another. It is the estimated grade level that corresponds to a given score.

Question 6

Percentile rank (percentile)

Answer 6

Is a score indicating the percentage of people of scores that occur at or below a given score, For example if you have a percentile rank of 75 in a class, this means that you did as well as or better than 75 percent of the students in the class.

Question 7

Protocol

Answer 7

A set of conventions that determine the treatment, exchange and formatting of data in an electronic communications system. Similar to a data standard but applied to procedures.

Question 8

Quartiles

Answer 8

Each of four equal groups into which a population can be divided according to the distribution of values of a particular variable.

Each of the three values of the random variable that divide a population into four groups

Question 9

Raw score

Answer 9

The raw score normally indicates the number of idem correctly answered on a given test. This is a test score that had nit been weighted, transformed, of statistically manipulated.

Question 10

Scaled scores

Answer 10

is a representation of the total number of correct questions a candidate has answered (raw score) that has been converted onto a consistent and standardized scale.

Question 11

Standard score

Answer 11

A score that is derived from an individual’s raw score within a distribution of scores. The standard score describes the difference of the raw score from a sample mean, expressed in standard deviations. Standard scores preserve the absolute differences between scores.

Question 12

Stanine

Answer 12

A stanine (“standard nine”) score is a way to scale scores on a nine-point scale. It can be used to convert any test score to a single-digit score. Like z-scores and t-scores, stanines are a way to assign a number to a member of a group, relative to all members in that group.

Question 13

T score

Answer 13

This is another way to express test performance. T scores have a mean of 50 with a standard deviation of 10.
T = 50 + 10z

Question 14

z score

Answer 14

z scores indicates how many standard deviations a scores is above or below the mean. A z scores is a standard score distribution with a mean of zero and a standard deviation of one.
z= (Test score -Mean Score)/Standard Deviation