Exam Preparation Quiz

Question 1

M

Answer 1

sample mean

Question 2

μ

Answer 2

population mean

Question 3

SD

Answer 3

sample standard deviation

Question 4

σ

Answer 4

population standard deviation

Question 5

N

Answer 5

sample size

Question 6

X

Answer 6

raw score

Question 7

Independent measures

t-test

Answer 7

You want to compare a sample mean of group 1
to the sample mean of group 2 (note, members
in group 1 are not the same as members in
group 2)

Question 8

Pearson’s correlation

coefficient

Answer 8

Is for measuring a relationship between two things. A Correlation Coefficient tells us about magnitude (strength) and direction. E.g. You are interested in the relationship between
smartphone addiction and anxiety

Question 9

z-test

Answer 9

You want to compare a sample mean (M) to a
population mean, and dividing by the standard error (SE) of the mean. The population standard
deviation is known

Question 10

Single sample t-test

Answer 10

You want to compare a sample mean (M) to a

population mean, but the population standard deviation is not known

Question 11

Repeated meausres t-test

Answer 11

You want to compare the difference between

the participants scores at time 1 and participants scores at time 2

Question 12

Matched subjects t-test

Answer 12

You want to compare a sample mean of group 1
to the sample mean of group 2 (note, members
in group 1 are considered equivalent (but are
not the same) to members in group 2)

Question 13

What is the correct test to run based on SPSS data

Relationship between two scale variables

Answer 13

Correlation coefficient

Question 14

What is the correct test to run based on SPSS data

One categorical variable, one continuous variable

Answer 14

Independent measures t-test

Question 15

What is the correct test to run based on SPSS data

Difference between two scale variables

Answer 15

Repeated measures t-test

Question 16

What is the correct test to run based on SPSS data

One scale variable

Answer 16

Single-sample t-test

Question 17

Is there a difference between Stress at Time 1 and Stress at Time 2? The researcher should
run a __________________________ test. Because…

Answer 17

Repeated measures t-test. Because the question is referring to the difference between two scale variables

Question 18

What if the question was ‘is there a relationship between Stress at Time 1 and
Stress at Time 2?’ What test would be appropriate to run to answer this
research question? __________

Answer 18

Correlation coefficient as the question is referring to the relationship between two scale variables

Question 19

Is there a difference between men and women’s extraversion scores? The researcher should
run a __________________________ test

Answer 19

Independent measures t test as the question refers to one categorical variable (gender) and one scale variable (extraversion scores)

Question 20

Is there a difference between sample optimism mean and population optimism mean (μ =
49)? The researcher should run a __________________________ test.

Answer 20

Single sample t-test as the question refers to comparing a sample mean to the population mean but the population standard deviation is not known

Question 21

Carmen is interested in comparing her clinical sample mean score (M = 16) on the Generalised Anxiety Disorder Measure to the population mean (μ = 15). Carmen does not have the
population standard deviation (σ is not known)

Which test/method/procedure should be used?

Answer 21

single-sample t-test

Question 22

Do men or women have higher narcissism scores? A researcher wants to compare men’s mean score (M = 25) on the Narcissism Personality Inventory to women’s mean score (M =
23).

Which test/method/procedure should be used?

Answer 22

Independent measures t-test

Question 23

Thomas is interested if there is a mean difference between the sample depression mean (M = 40) and the population mean (μ = 45, σ = 5).

Which test/method/procedure should be used?

Answer 23

Z-test

Question 24

Zoe is curious whether she has a higher aptitude score in verbal (X = 25, M = 28, SD = 5) or maths (X = 20, M = 23, SD = 3).

Which test/method/procedure should be used?

Answer 24

z-score (standardised score)

Question 25

To test if classical music really does help people retain information whilst studying, a researcher recruits 10 participants. All participants attempt to memorise a list of words while no music plays, and the researcher then assesses how many words are remembered. The participants then all attempt to memorise a list of words while classical music plays, and the researcher then
assesses how many words are remembered.

Which test/method/procedure should be used?

Answer 25

Repeated measures t-test

Question 26

Justin wants to know what percentage of the sample falls below a score of 8 (M = 10, SD = 3.5).

Which test/method/procedure should be used?

Answer 26

z-score

Question 27

Danielle is interested in the relationship between alcohol consumption and
insomnia.

Which test/method/procedure should be used?

Answer 27

correlation coefficient

Question 28

Sally is curious whether cats or dogs are more playful.

Which test/method/procedure should be used?

Answer 28

independent measures t-test

Question 29

Do people dance more to ABBA or the Bee Gees? Kate recruits 20 participants and
assigns 10 to dance to ABBA and 10 to dance to the Bee Gees. Kate ensures each participant in one
group is equivalent to a participant in the other group on gender, age, and physical fitness,

Which test/method/procedure should be used?

Answer 29

matched-subjects t-tests

Question 30

Rose is curious if her cat’s cuteness level (M = 26) is significantly different to the
population mean cuteness level (μ = 24).

Answer 30

single sample t-test

Question 31

Marcus wants to test if caffeine consumption has an effect on stress levels. He
recruits 20 participants. All participants have no caffeine and complete a stress measure. All participants then have two cups of coffee and complete another stress measure. Marcus wants to
compare stress levels.

Which test/method/procedure should be used?

Answer 31

repeated-measures t-test