Midterm Review - Research II

Question 1

Variables measured at this level are mutually exclusive:

Accepted Answer

Trick Question; all variables are mutually exclusive

Question 2

Range, interquartile range, mean deviation, variance, & standard deviation are all measures of:

Accepted Answer

variability

Question 3

In a positively skewed distribution, the mean is to the _______ of the median

Accepted Answer

right

Question 4

What level of measurement would be most definitive for the variable, COUNTRY OF ORIGIN?

Accepted Answer

nominal

Question 5

What is this?

Accepted Answer

a boxplot (in silhouette)

Question 6

A ____ is used to display the central tendency and dispersion of attributes of a variable:

Accepted Answer

Box plot

Question 7

What does the standard deviation measure?

Accepted Answer

variance

Question 8

A trait or characteristic that does not differ in quantity or quality among people is called a

Accepted Answer

constant

Question 9

This level of measurement is not associated with an amount:

Accepted Answer

nominal

Question 10

A histogram cannot be used with which type of data?

Accepted Answer

Nominal-level data

Question 11

What is the mathematical probability that sampling error might cause variables to be related?

Accepted Answer

p value

Question 12

What level of measurement would be most definitive for the variable, BLOOD-ALCOHOL LEVEL?

Accepted Answer

continuous

Question 13

Which one of these is NOT a measure of central tendency?

Accepted Answer

Outlier

Question 14

What type of variable can assume an unlimited number of different values?

Accepted Answer

continuous

Question 15

What does the rejection region depend on?

Accepted Answer

Rejection level selected & if the hypothesis non/directional

Question 16

__________ is the degree to which the distribution of a variable is not symmetrical:

Accepted Answer

Skewness

Question 17

In selecting a graph to display data, the most important consideration should be:

Accepted Answer

how clearly it communicates the findings.

Question 18

Which of the following would NOT be a variable among social work students?

Accepted Answer

subject of study

Question 19

If a distribution is negatively skewed, the hump is on

Accepted Answer

the right

Question 20

The measure of central tendency most appropriate for a nominal level variable is

Accepted Answer

mode

Question 21

If a distribution is positively skewed, the tail is:

Accepted Answer

on the right

Question 22

At this level of measurement, the gaps between variable amounts are standard (equal):

Accepted Answer

continuous

Question 23

A Likert scale would be a good example of this level of measurement

Accepted Answer

ordinal

Question 24

The measure of central tendency at the center of a distribution is

Accepted Answer

median

Question 25

Once research data has been collected, they can be used to:

Accepted Answer

all of the above

Question 26

What does the standard error of the mean depend on?

Accepted Answer

the sample size

Question 27

What analyses summarizes the actual measurements of individual variables within a data set?

Accepted Answer

Descriptive data analyses

Question 28

The measure of central tendency most appropriate for a highly skewed, continuous variable is

Accepted Answer

median, trimmed mean

Question 29

Sampling Error, or the Chance of getting results not reflective of the population:

Accepted Answer

will very rarely happen in statistics

Question 30

If a distribution is negatively skewed, the tail is:

Accepted Answer

on the left

Question 31

What are the four levels of measurement?

Accepted Answer

Nominal, ordinal, interval, ratio

Question 32

At this level of measurement, scores can be added, subtracted, multiplied & divided

Accepted Answer

continuous

Question 33

What level of measurement would be most definitive for the variable, MARITAL STATUS?

Accepted Answer

nominal

Question 34

In a normal distribution

Accepted Answer

the mean, median & mode are all in the center

Question 35

By convention, at what level of significance usually rejected by social scientists?

Accepted Answer

p < .05

Question 36

_________ statistics describes the relationship between 3 or more variables.

Accepted Answer

Multivariate

Question 37

What level of measurement would be most definitive for the variable, TIME SPENT ON A MIDTERM?

Accepted Answer

continuous

Question 38

The measure of central tendency at the midpoint of an array of scores is:

Accepted Answer

the median

Question 39

The ________ variable may influence the _______ variable

Accepted Answer

Independent; Dependent

Question 40

What level of measurement would be most definitive for the variable, MILES DRIVEN IN A DAY?

Accepted Answer

continuous

Question 41

The trimmed mean is best used when

Accepted Answer

When there are one or more outliers

Question 42

For the variable "age," Mia fell at the 27th percentile rank in her class. What does this mean?

Accepted Answer

She is older than approximately 27% of her class.

Question 43

Two general categories of ________ tests are parametric and nonparametric

Accepted Answer

Statistical

Question 44

The distance between points in this hierarchical measurement level is not obviously equal:

Accepted Answer

ordinal

Question 45

Statistical Power is the ability of a test to correctly ______ the null hypothesis

Accepted Answer

reject

Question 46

What level of measurement would be most definitive for the variable, COUNTRY OF ORIGIN?

Accepted Answer

nominal

Question 47

Researchers should not sacrifice ______ by being too creative and using complex graphs.

Accepted Answer

clarity

Question 48

_______ can cause a wrong impression about the relationships between two variables in a sample.

Accepted Answer

research design flaws

Question 49

In a data set, what would be an example of a frequency?

Accepted Answer

the number of people who stated that they were 28 years old

Question 50

What is memoing?

Accepted Answer

Leaving notes for oneself

Question 51

At this level of measurement, attributes may be rank-ordered

Accepted Answer

ordinal

Question 52

To reduce sampling error it is best to:

Accepted Answer

have larger samples

Question 53

In a negatively skewed distribution, the mean is to the _______ of the median

Accepted Answer

left

Question 54

If an instructor adds 5 points to all the students' exams, what will not change?

Accepted Answer

all of the above

Question 55

The measure of central tendency most appropriate for an ordinal level variable is

Accepted Answer

median

Question 56

Race is what type of level of measurement?

Accepted Answer

nominal

Question 57

When a researcher cannot identify the research participants, the study is

Accepted Answer

anonymous

Question 58

When a researcher can identify the study respondents, but keeps this info private, the study is

Accepted Answer

confidential

Question 59

Writing reflective notes about what the researcher is learning from the data is called:

Accepted Answer

memoing

Question 60

In a box plot, what does the line that lies within the box represent?

Accepted Answer

the median

Question 61

Analogy: A statistic is to a research sample as a ________ is to a population.

Accepted Answer

parameter

Question 62

The measure of central tendency most appropriate for a continuous level variable is

Accepted Answer

mean

Question 63

Variables whose attributes are only characterized by exhaustiveness & mutual exclusiveness are

Accepted Answer

nominal variables

Question 64

What level of measurement would be most definitive for the variable, AGE?

Accepted Answer

continuous

Midterm Review - Research II

Questions 70

Midterm Review - Research II

Questions 70