# Liberty university educ 750 quiz 3

Liberty University EDUC 750 QUIZ 3

EDUC 750 QUIZ 3

·         Question 1

3 out of 3 points

In the ex post facto control group design, participants decide themselves whether to join the control or treatment group.

·         Question 2

3 out of 3 points

Christopher Brown’s (2009) study examining the disconnect between prekindergarten and elementary school teaching approaches was an example of a (n):

·         Question 3

3 out of 3 points

Subjects are not randomly assigned to the comparison and experimental groups in quasi-experimental design.

·         Question 4

3 out of 3 points

A major weakness of cross-sectional design is it:

·         Question 5

3 out of 3 points

Which of the following is NOT a characteristic of a true experiment?

·         Question 6

3 out of 3 points

All true experiments have a posttest.

·         Question 7

3 out of 3 points

A researcher who draws conclusions about individual-level processes from group-level data may be making a (n) _____ fallacy.

·         Question 8

3 out of 3 points

In a study examining the effects of ADHD medication on school children, the children who don’t receive the medication would be the _____ group.

·         Question 9

3 out of 3 points

Another term for trend study is:

·         Question 10

3 out of 3 points

Identification of the context in which a causal relationship occurs is a criterion for a valid causal relationship.

·         Question 11

3 out of 3 points

Matching is an effective substitute for randomization.

·         Question 12

3 out of 3 points

Nonequivalent control group design is a type of _____ design.

·         Question 13

3 out of 3 points

The _____ is computed by taking each score and subtracting the mean; then squaring the difference; then summing all these differences; then dividing this sum by the total number of scores.

·         Question 14

3 out of 3 points

Statistics used to describe the association among variables and to control for other variables are called:

·         Question 15

3 out of 3 points

The _____ indicates how sure we can be, given our particular random sample, that the value of some statistic in the population falls within a particular range.

·         Question 16

3 out of 3 points

Most measures of central tendency and variability are also inappropriate for qualitative variables.

·         Question 17

3 out of 3 points

A bar chart would be the best method of describing which variable?

·         Question 18

0 out of 3 points

Secondary analysis involves a substandard data set.

·         Question 19

3 out of 3 points

Which measure of central tendency would be most affected by a small number of extreme cases?

·         Question 20

3 out of 3 points

Level of measurement determines the appropriateness of a particular statistic.

·         Question 21

3 out of 3 points

The most frequent value in a distribution is the:

·         Question 22

3 out of 3 points

How we interpret and report statistics determines their usefulness.

·         Question 23

3 out of 3 points

_____ occurs when a researcher concludes there is a relationship between variables in a population when in fact there is none.

·         Question 24

3 out of 3 points

The concept of _____ is central to the ethical use of statistics.

·         Question 25

3 out of 3 points

An exceptionally high or low value in a distribution is referred to as a(n):

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