Research Continued

Front 1

The mean is an arithmetic average and can be utilized at what beginning level of measurement scale?

Back 1

Interval

Front 2

Which measurement scale provides a true point as well as equal intervals

Back 2

Ratio

Front 3

Which scale of measurement is the least sophisticated

Back 3

Nominal

Front 4

Which measurement scale is typical of classroom test?

Back 4

Interval

Front 5

Measures of Central Tendency

Back 5

used to describe the average score of a group of scores.

Front 6

Measures of variability

Back 6

describe how spread out a group of scores are or how they spread themselves away from the central tendency(mean).

Front 7

Measures of relative position

Back 7

compare a subject's performance to that of the other subjects.

Front 8

Measures of relationship

Back 8

describe the degree of relationship between two sets of scores.

Front 9

Normal Curve

Back 9

A negatively skewed set of scores is evident when extreme score(s) pull the distribution out of shape and toward the left(-1 direction,tail of the curve).

Front 10

Mean

Back 10

the mean is the most widely used measure of central tendency and called the arithmetic mean.

Front 11

Which measure of central tendency is most appropriate to use with nominal data?

Back 11

Mode

Front 12

Which central tendency is the most frequently occuring score?

Back 12

Mode

Front 13

Variablity

Back 13

refers to how scores speard around the central tendency

Front 14

Standard Deviation

Back 14

the standard deviation is the square root of the squared deviations from the mean.

Front 15

Standard Scores

Back 15

Raw scores are converted using the normal curve to form standard scores.

Front 16

Z Scores

Back 16

portrayed as a small z is the raw score minus the mean of the group divided by the standard deviation z=(x-m/s).

Front 17

In a standard distribution with a mean of 100 and a standard of 15,what is the z score for a score of 115

Back 17

+1.00

Front 18

What is the equivalent T score for a score of 34 in a normal distribution where the mean is 20 and the standard deviation is 7?

Back 18

70

Front 19

In a normal distribution,what is the CEEB score for a raw score of 85 when the mean is 100 and the standard deviation is 15?

Back 19

400

Front 20

Common variance

Back 20

is the "variation in one variable that is attributable to its tendency to vary with the other"

Front 21

Continuous Variables

Back 21

are measured on a scale that changes gradually as though there are divisions between the steps.

Front 22

Dichotomous Variables

Back 22

are two levels such that it is either yes-no.

Front 23

Pearson r:

Back 23

when data are represented as interval or ratio scales,the Pearson r is the appropriate measure correlation.

Front 24

Phi:

Back 24

when both variables are genuine or true dichotomies,this test is used.

Front 25

A correlation coefficient of .89 can be described as:

Back 25

strong positive

Front 26

Two evaluators ranked five dogs for form while running. The ranks assigned each of two days were displayed for each dog. Which correlation would be the most appropriate.

Back 26

Point Biserial
(Form is in ordinal data while each day represents dichotomous day one-day two).

Front 27

Null Hypothesis

Back 27

states that there is no true difference between the mean score of two groups,and if a difference is found,then it is the result of sampling error.

Front 28

The following information was found in a recent journal article. The mean score for group A was significantly higher than the mean score for group B(p<.01). This statement by the researcher means there is a:

Back 28

99% probability that the difference occurred due to the manipulation of the independent variable.

Front 29

Median Test

Back 29

non-parametric test used when scores are ordinal,or when the score are interval or ratio but do not meet the criteria for parametric that smoothness of distribution.

Front 30

Sign Test

Back 30

a non-parametric alternative to the t-test for matched pairs.

Front 31

Chi Square

Back 31

a non-parametric test used to find the significance of differences among proportions.

Front 32

A teacher administered two different forms of a test measuring math achievement to all of her students. Each student took both test. She wants to know if there is a relationship between the scores on the first form and the second form. What statistical technique should she use?

Back 32

Pearson r(describes the relationship).

Front 33

If the teacher wanted to know the difference between the raw scores on each form,what should she use?

Back 33

t-test for independent sample.

Front 34

What method of research would be used for the following? The researcher hypothesizes that premarital counseling contributed to better marital adjustment. The researcher selected a group of couples who have been married for one year who will undergo premarital counseling and compare them to a group(also married one year) who do not receive premarital counseling.

Back 34

experimental method

Front 35

What is the appropriate research design for the following hypothesis? A researcher hypothesized that randomly selected students who received Computer Assisted Instruction will have greater gains in algebra achievement than students who do not.

Back 35

Pretest posttest control group design

Front 36

If we decrease the probability of a Type I error by choosing alpha small,we:

Back 36

increase probability of Type II

Front 37

A researcher sets out to determine if fifth-grade students in Georgia have a higher or lower self-esteem rating than first-grade classes from several different schools across Georgia. This is an example of what type of sampling?

Back 37

cluster

Front 38

Test A and Test B are musical aptitude tests while Test C and Test D are musical attitude inventories. The following correlations were reported. Which technique will break down the relationship among a set of observations and identify a set of primary components that will explain the relationship among the observations?

Back 38

factor analysis