Deck 2: Organizing the Data

Question 1

Kurtosis refers to:

A)the peakedness of a distribution.
B)the skewness of a distribution.
C)the cumulative frequency of a distribution.
D)the symmetry of a distribution.

Answer 1

the peakedness of a distribution.

Question 2

The question below refers to the following frequency table of quiz scores:
Given the following frequency distribution:
The cumulative percentage (c%) is defined as:

A)
B)
C)
D)

Answer 2

Question 3

Pie charts are particularly useful for what type of data?

A)nominal level data
B)ordinal level data
C)interval level data
D)none of the above

Answer 3

nominal level data

Question 4

The formula to construct the midpoint (m) of a class interval is

A)
B)
C)
D)

Question 5

The question below refers to the following frequency table of quiz scores:
Given the following frequency distribution:
What is the cumulative frequency of score 6?

A)14
B)15
C)16
D)22

Question 6

Skewness refers to:

A)a symmetrical distribution of scores.
B)having more extreme cases in one direction and not the other.
C)the central limit theorem.
D)none of the above

Question 7

The question below refers to the following frequency table of quiz scores:
Given the following frequency distribution:
What is the cumulative percentage of score 6?

A)32
B).68
C)32%
D)68%

Question 8

The question below refers to the following:
A national poll prior to a presidential election determines that 16 states can be classified as Blue (Democratic), 19 states as Red (Republican), and 15 states as Purple (undecided).
What proportion of states are Blue?

A).30
B).38
C).32
D).24

Question 9

In a cross tabulation, if the independent variable is on the rows, use __________ percents.

A)total
B)column
C)row
D)diagonal

Question 10

The question below refers to the following:
A national poll prior to a presidential election determines that 16 states can be classified as Blue (Democratic), 19 states as Red (Republican), and 15 states as Purple (undecided).
What percentage of states are Red?

A)30%
B)38%
C)32%
D)24%

Question 11

The question below refers to the following list of test scores:
Given the following raw data of test scores:
The cumulative frequency of a score of 74 is:

A)10.
B)8.
C)7.
D)6.

Question 12

The midpoint of the class interval 90-99 is:

A)93
B)95
C)94.5
D)94

Question 13

When organizing a frequency table for a variable measured at the ordinal level:

A)categories may be arranged from lowest to highest.
B)categories are not in order.
C)categories may be arranged from highest to lowest.
D)a & c

Question 14

The question below refers to the following frequency table of quiz scores:
Given the following frequency distribution:
What is the N (total) in the above table?

A)20
B)21
C)22
D)24

Question 15

When organizing a frequency table for a variable measured at the nominal level:

A)the table should have a title that gives the reader an idea about the nature of the data presented.
B)the table should have 2 columns.
C)the table should never have more than 5 rows.
D)a & b

Question 16

The question below refers to the following list of test scores:
Given the following raw data of test scores:
51, 58, 62, 62, 66, 74, 79, 79, 80, 80, 80, 80, 91, 93, 93, 93
The cumulative percent of a score of 79 is:

A)55%.
B)50%.
C)38%.
D)24%.

Question 17

The question below refers to the following:
A national poll prior to a presidential election determines that 16 states can be classified as
Blue (Democratic), 19 states as Red (Republican), and 15 states as Purple (undecided).
What percentage of states are Blue and Purple?

A)66%
B)38%
C)23%
D)62%

Question 18

The question below refers to the following frequency table of quiz scores:
Given the following frequency distribution:
Cumulative frequencies are defined as:

A)the total number of cases having any given score or a score that is higher.
B)the half number of cases having any given score or a score that is lower.
C)the total number of cases having any given score or a score that is lower.
D)the half number of cases having any given score or a score that is lower..

Question 19

The question below refers to the following list of test scores:
Given the following raw data of test scores:
51, 58, 62, 62, 66, 74, 79, 79, 80, 80, 80, 80, 91, 93, 93, 93
In the above scenario, having a cumulative percent of 50% for a score of 79 means that:

A)79% scored higher than a 50 on the test.
B)50% scored higher than a 79 on the test.
C)79% scored at or below a 50 on the test.
D)50% scored at or below a 79 on the test.

Question 20

The midpoint of the class interval 60-65 is:

A)62.5
B)63
C)62
D)63.5

Question 21

A survey examined the relationship between political party affiliation and gender. The
following cross-tabulation presents the data.
Calculate total percents for each cell.

Question 22

We call a normal curve __________ because folding it at the center creates two identical
halves.

Question 23

__________ scores on one side of a distribution will cause skewness.

Question 24

A positively skewed distribution has its tail on the __________.

Question 25

A __________ is the frequency of occurrence of a category per 100 cases.

Question 26

A survey examined the relationship between political party affiliation and gender. The
following cross-tabulation presents the data.
In the above cross-tabulation, the __________variable, gender, is on the columns.

Question 27

A survey examined the relationship between political party affiliation and gender. The
following cross-tabulation presents the data.
Calculate column percents.

Question 28

The terms bar graph and __________ are often used interchangeably, although the latter
has its bars joined to emphasize continuity.

Question 29

A __________ skewed distribution has its tail on the left.

Question 30

A platykurtic distribution tends to be rather __________.

Question 31

__________-level scores can be presented in a grouped frequency distribution to clarify
presentation.

Question 32

A __________ is a table that presents the distribution (frequencies and percents) of one
variable across the categories of one or more additional variables.

Question 33

A proportion compares the __________ of a variable to the total number of cases.