Populations and Samples

Question 1

Populations

Answer 1

The group which researchers wish to generalize results

Question 2

Representative sample

Answer 2

The sample that matches as many characteristics as possible to the population as a whole

Question 3

Random Sample

Answer 3

Every population member has a chance to be selected for the sample

Question 4

Stratified random samples

Answer 4

Relevant Subgroups of the population are randomly sampled in proportion to size

Question 5

Whats the difference between Within subject design and Between Subject design?

Answer 5

Between-group design is an experiment that has two or more groups of subjects each being tested by a different testing factor simultaneously.

Within Subject an experiment in which the same group of SUBJECTS serves in more than one treatment(IV).

Question 6

Matched Subject Design

Answer 6

matched-subjects design, which is when subjects are matched on some variable that might be affecting the dependent variable and then split into two or more groups.

Question 7

Cofounding Variables

Answer 7

unintended Independent variables that are used to discount any other variables that could potentially affect the DV.

Question 8

Control Group

Answer 8

Eg: This group has no protein

Question 9

Experimental Group

Answer 9

Eg: This group get Protein

Question 10

NON-equivalent group design

Answer 10

Eg: focus groups to improve lesson effectiveness
one group get new plan
one group gets old plan