Psychology 253 Exam Prep (Part 1)

Question 1

In Psychology, what is the commonly accepted alpha level to determine whether an effect is significant?

Accepted Answer

.050

Question 2

Choose the correct answer

Accepted Answer

b

Question 3

What is displayed in the &#x27;output&#x27; window in SPSS?

Accepted Answer

Any analyses or graphs you have asked SPSS to run

Question 4

Choose the correct answer

Accepted Answer

a

Question 5

Choose the correct answer

Accepted Answer

a

Question 6

Q15

Accepted Answer

Independent measures t-test

Question 7

In an experiment, what can affect the p value of our inferential statistics?

Accepted Answer

These are all correct

Question 8

Choose the correct answer

Accepted Answer

c

Question 9

The assumption of normality in parametric analysis refers to the distribution of ___

Accepted Answer

Continuous variables

Question 10

The purpose of inferential statistics is to ___

Accepted Answer

Make inferences about a population based on sample data

Question 11

Which measure of central tendency can be used with ordinal data?

Accepted Answer

Median

Question 12

Which assumption of parametric analysis states that the observations are independent of each other?

Accepted Answer

Independence assumption

Question 13

Which one of the following is the correct non-parametric equivalent for an independent measures t-test?

Accepted Answer

Mann-Whitney U test

Question 14

The "variable view" in SPSS is used to ____

Accepted Answer

Dfine the variables you have data for

Question 15

A sample has a variance of 25. What is the standard deviation of the sample?

Accepted Answer

5

Question 16

The assumption of normality in parametric analysis can be assessed using ____

Accepted Answer

Histograms

Question 17

Choose the correct answer

Accepted Answer

a

Question 18

The sum of deviations from the mean in a dataset is always ____

Accepted Answer

Zero

Question 19

Choose the correct answer

Accepted Answer

c

Question 20

Choose the correct answer

Accepted Answer

b

Question 21

In th "data view" tab, how should one participant&#x27;s data be expressed?

Accepted Answer

In one row

Question 22

Which of the following is not an example of non-parametric test:

Accepted Answer

One-sample t-test

Question 23

The assumption of interval or ratio level measurement in parametric analysis refers to the ___

Accepted Answer

Type of data collected

Question 24

Choose the correct answer

Accepted Answer

d

Question 25

In hypothesis testing, the null hypothesis (H0) represents___

Accepted Answer

The hypothesis of no effect or no difference

Question 26

If we wanted to find the mean anxiety scores for teachers and waiters separately in our sample, how would we do this?

Accepted Answer

Use the split file function, then run the descriptive statistics

Question 27

Choose the correct answer

Accepted Answer

a

Question 28

If SPSS gives us a p value of .000, how should we write this up in a report?

Accepted Answer

p<.001

Question 29

Which measure of dispersion is affected by outliers?

Accepted Answer

Range

Question 30

What are the criteria to determine what value represents a small, medium, and large effect size?

Accepted Answer

≥ 0.2 small effect; ≥ 0.5 medium effect; ≥ 0.8 large effect

Question 31

Which of the following measures of central tendency is most affected by outliers?

Accepted Answer

Mean

Question 32

Choose the correct answer

Accepted Answer

b

Question 33

Variance is defined as ___

Accepted Answer

The average of squared deviations from the mean

Question 34

Which of the following statements is true regarding the variance and standard deviation?

Accepted Answer

Variance is the square root of the standard deviation

Question 35

Q19

Accepted Answer

Related samples t-test

Question 36

Choose the correct answer

Accepted Answer

c

Question 37

A negatively skewed distribution is characterized by ____

Accepted Answer

A long tail on the left side

Question 38

If we wanted to test whether our data was normally distributed, what should we run in SPSS?

Accepted Answer

Kolmogrov-Sminrov

Question 39

Q16

Accepted Answer

Repeated measures t-test

Question 40

Choose the correct answer

Accepted Answer

b

Question 41

Which measure of central tendency is not affected by extreme values or outliers?

Accepted Answer

Median

Question 42

Effect size quantifies ___

Accepted Answer

The magnitude of a treatment or intervention effect

Question 43

Choose the correct answer

Accepted Answer

c

Question 44

In an ideal dataset you would want your data to have...

Accepted Answer

A large amount of between group variance, and little within group variance

Question 45

The standard deviation is the square root of the ___

Accepted Answer

Variance

Psychology 253 Exam Prep (Part 1)

Questions 45

Psychology 253 Exam Prep (Part 1)

Questions 45