Question 1

The number of times the various numbers on a roulette wheel come up, in the long run, form a(n)__________ frequency distribution.

Accepted Answer

The answer of The number of times the various numbers...

Question 2

A psychologist is interested in studying aggressive tendencies in people and develops a measure of this personality characteristic. Aggression has become a(n)__________ in the psychologist's study.

Accepted Answer

A) abstract concept 
B) variable 
C) value 
D) invariable construct

Question 3

According to the table, what is the total number of patients in this sample who suffer from motor problems?

Accepted Answer

A) 20/200 
B) 40 
C) 40/N 
D) 64

Question 4

Researchers use __________ to draw statistical conclusions that go beyond the numbers actually collected in the research.

Accepted Answer

The answer of Researchers use __________ to draw statistical conclusions...

Question 5

If you suffer from test anxiety, some useful advice is to:

Accepted Answer

A) overprepare for tests (at least at first) 
B) learn methods to breathe properly and deeply 
C) create a practice test situation that is similar to the real test 
D) all of the above

Question 6

Another name for an ordinal variable is a(n)__________ variable.

Accepted Answer

The answer of Another name for an ordinal variable is...

Question 7

A researcher measures the eye movements of 100 participants as they read ambiguous words embedded within sentences. Because eye movements are measured in milliseconds, and there are likely to be many different times measured, the researcher decides to use a __________ to help make sense of these data.

Accepted Answer

A) frequency polygraph 
B) scatterplot 
C) grouped frequency table 
D) horizontal bar chart

Question 8

The distribution of scores in a research study in the behavioral and social sciences is usually:

Accepted Answer

A) unimodal 
B) bimodal 
C) multimodal 
D) rectangular

Question 9

In some cases, researchers describe a distribution in terms of whether its tails have many or few scores in them. This aspect of the shape of a distribution is known as:

Accepted Answer

A) symmetry 
B) kurtosis 
C) z-transformation 
D) queue

Question 10

Consider the scores 2, 6, 7, 1, 7, 8, 5, 4. Which of the following would be the correct second line of the frequency table?

Accepted Answer

A) 2, 7, 20% 
B) 7, 2, 25% 
C) 6, 1, 6% 
D) 1, 1, 12%

Question 11

Place the five steps for making a frequency polygon into the correct order: 1. Along the left side of the page (y-axis), make a scale of frequencies that ranges from 0 at the bottom to the highest frequency for any value.
2) Connect the points with lines.
3) Make a frequency table.
4) Mark a point above each value with a height for the frequency of that value.
5) Put the values along the bottom of the page (x-axis).

Accepted Answer

A) 3, 5, 1, 4, 2 
B) 2, 3, 1, 4, 5 
C) 5, 3, 1, 2, 3 
D) 3, 5, 1, 2, 4

Question 12

According to the table, what is the most common types of cognitive problem faced by Alzheimer's disease patients?

Accepted Answer

A) Motor problems 
B) Language problems 
C) Memory problems 
D) Attentional problems

Question 13

When making a frequency table for a numeric variable, the list down the left edge of the page should include:

Accepted Answer

A) all possible values, starting from the highest and ending with the lowest 
B) only even-numbered values 
C) only odd-numbered values 
D) the cumulative frequencies and percentages for female participants

Question 14

On a measure of social skills, the difference between scores of 6 and 7 has the same meaning as a difference between scores of 25 and 26. This measure is considered a(n)__________ variable.

Accepted Answer

The answer of On a measure of social skills, the...

Question 15

A student theorizes that performance on a statistics exam will be related to the number of hours she spent studying. This student will be required to use __________ to test her theory.

Accepted Answer

A) common sense 
B) reasoning by analogy 
C) inferential statistics 
D) intuition

Question 16

Why might a frequency polygon include an extra value at the start and end along the bottom?

Accepted Answer

A) To illustrate the bimodal distribution of the data 
B) To highlight the value with the largest frequency 
C) To make a closed figure (i.e., polygon) 
D) To construct a rectangular distribution

Question 17

A distribution is called __________ when the pattern of frequencies on the left and right side are mirror images of each other.

Accepted Answer

The answer of A distribution is called __________ when the...

Question 18

In a histogram, the vertical (up and down)dimension displays:

Accepted Answer

A) possible values the variable can have 
B) intensity of the variable 
C) mean score 
D) frequency

Question 19

An important difference between a histogram and a frequency polygon is that the frequency polygon:

Accepted Answer

A) is used for grouped values 
B) begins and ends with a frequency of 10 (i.e., at the y-axis) 
C) covers the full range of values 
D) begins and ends with a frequency of zero (i.e., at the horizontal axis)

Question 20

A distribution in which the scores pile up on one end and are spread out on the other end is an example of a(n)__________ distribution.

Accepted Answer

The answer of A distribution in which the scores pile...

Exam 1: Displaying the Order in a Group of Numbers Using Tables and Graphs