Unit 1 Psychology Exam Revision (Quiz 1)

A ___________ is the group of individuals taking part in the research study.

• Population

• Sample

• Variable

• Control

___________ __________ is the group of people to which the findings of the study are expected to be generalized.

• Sample

• Random sampling

• Population

• Matching variables

Which statement is correct?

• A stratified sample is more likely to be representative of the population than a convenience sample.
• A sample is always representative of a population.
• A convenience sample is more likely to be representative of the population than a stratified sample.
• A small random sample is more likely to be representative of the population than a large stratified sample.

The population in a research study is...

• the whole group of research interest.
• the smaller group that has been chosen from the group of research interest.
• exactly the same as the sample.
• always smaller than the sample.

Which answer provides examples of individual participant differences?

• independent variables, dependent variables
• time of day, noise level, temperature, location
• prior experience, motivation, intelligence, educational background
• extraneous variables, confounding variables

_______________ is an advantage of a repeated-measures experimental design; ______________ may be a disadvantage.

• Reducing the effect of situational variables | order effects
• Ease of administration | possible confounding participant variables
• Reducing the effect of participant variables | order effects
• Complexity of administration | the influence of situational variables

Counterbalancing is a procedure that is intended to reduce ______________ in a/n ______________ design.

• order effects | independent-groups
• order effects | repeated-measures
• the influence of participant variables | matched-participants
• the influence of participant variables | independent-groups

Measure of central tendency calculated by adding up all scores and dividing by the number of scores in the data set.

• Median

• Mode

• Mean

The mode is:

• The average of all the values

• The middle number

• The most frequently occurring number

• The first number you see

In experimental studies which group receives nothing? In other words, they do not get the variable that is under study.

• Experimental group

• Control group