Explain and provide an example for each of the following types of variables

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Week 1 Practice WorksheetPSY/315 Version 82

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Week 1 Practice Worksheet

Provide a response to the following prompts. Utilize electronic readings for the week and our textbook to help you answer appropriately.Cite/Reference all sources using proper APA 6th edition format. Citing and referencing our course textbook is REQUIRED on ALL practice worksheets.

1. Explain and provide an example for each of the following types of variables:

a. Nominal:

b. Ordinal:

c. Interval:

d. Ratio scale:

e. Continuous:

f. Discrete:

g. Quantitative:

2. The following are the speeds of 40 cars clocked by radar on a particular road in a 35 miles-per-hour zone on an afternoon:

30, 36, 42, 36, 30, 52, 36, 34, 36, 33, 30, 32, 35, 32, 37, 34, 36, 31, 35, 20

24, 46, 23, 31, 32, 45, 34, 37, 28, 40, 34, 38, 40, 52, 31, 33, 15, 27, 36, 40

Create a frequency table and a histogram. Then, describe the general shape of the distribution.

3. Raskauskas and Stoltz (2007) asked a group of 84 adolescents about their involvement in traditional and electronic bullying. The researchers defined electronic bullying as “…a means of bullying in which peers use electronics {such as text messages, emails, and defaming Web sites} to taunt, threaten, harass, and/or intimidate a peer” (p. 565). The table below is a frequency table showing the adolescents’ reported incidence of being victims or perpetrators or traditional and electronic bullying.

a. Using the table below as an example, explain the idea of a frequency table to a person who has never taken a course in statistics.

b. Explain the general meaning of the pattern of results.

Incidence of Traditional and Electronic Bullying and Victimization (N = 84)
Forms of bullyingN%
Electronic victims4148.8
 Text-message victim2732.1
 Internet victim (websites, chatrooms)1315.5
 Camera-phone victim89.5
Traditional victims6071.4
 Physical victim3845.2
 Teasing victim5059.5
 Rumors victim3238.6
 Exclusion victim3050
Electronic bullies1821.4
 Text-message bully1821.4
 Internet bully1113.1
Traditional bullies5464.3
 Physical bully2934.5
 Teasing bully3845.2
 Rumor bully2226.2
 Exclusion bully3541.7

4. Describe whether each of the following data words best describes descriptive statistics or inferential statistics. Explain your reasoning. (Note: You are not defining each of these words, but rather stating whether each word indicates whether you should use descriptive or inferential statistics or both).

a. Describe:

b. Infer:

c. Summarize:

5. Regarding gun ownership in the United States, data from Gallup polls over a 40-year period show how gun ownership in the United States has changed. The results are described below, with the percentage of Americans who own guns given in each of the 5 decades.


a. Are the percentages reported above an example of descriptive statistics or inferential statistics? Why?

b. Based on the table, how would you describe the changes in gun ownership in the United States over the 40 years shown?

6. Refer to the Simpson-Southward et al. (2016) article from this week’s Electronic Reserve Readings. Was this an example of inferential statistics and research or descriptive statistics and research? Justify your response.

7. Explain and provide an example for each of the following shapes of frequency distributions (a visual example may be helpful – ensure your answer is thorough).

a. Symmetrical:

b. Skew:



Copyright ©2013 by Pearson Education, Inc.  All rights reserved.  Used with permission.

Copyright © XXXX by University of Phoenix. All rights reserved.

Copyright ©2013 by Pearson Education, Inc.  All rights reserved.  Used with permission.