18 Oct Inferential statistics:

Take a moment to review the details of this assignment below and gather any necessary files. Once you’re ready to submit your assignment, move on to Step 2.

 

Assessment Description

 

Use the attached worksheet “Application Check” to review important terminology used in this course. Submit the completed worksheet.

 

Using your own words, define the following terms and provide an example:

 

1.            Descriptive statistics:

 

2.            Inferential statistics:

 

3.            Qualitative data:

 

4.            Quantitative data:

 

5.            Independent variable:

 

6.            Dependent variable:

 

7.            Mode:

 

8.            Mean:

 

9.            Median:

 

10.          Percentile:

 

11.          Standard deviation:

 

12.          Degrees of freedom:

 

 

 

PSY520 Graduate Statistics

 

Week 1 Assignment  

 

Descriptive Statistics Project

 

Take a moment to review the details of this assignment below and gather any necessary files. Once you’re ready to submit your assignment, move on to Step 2.

 

Assessment Description

 

Use the attached document “Descriptive Statistic Project” to complete the assignment.

 

While APA style is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.

 

Directions: Use the following information to complete the questions below.

 

A researcher was interested in the anxiety present in students just prior to the midterm exam. The researcher used an anxiety self-quiz to gauge the student’s anxiety. The scores for 30 students are given here.

 

69           99           91           66           70           98           70           53           40           58

 

61           66           94           77           70           56           88           85           86           40

 

84           86           54           48           86           43           78           53           79           89

 

1.            Construct a frequency table with class, frequency, relative percent, and cumulative percent that has 6 classes to describe the distribution of the data in SPSS.

 

2.            Use the frequency table to construct a histogram in SPSS.

 

3.            Use SPSS to calculate the numerical descriptive statistics mean, median, standard deviation, and variance of the anxiety scores.

 

 

 

PSY520 Graduate Statistics

 

Week 2 Assignment  

 

Probability Project

 

Assessment Description

 

Use the document “Probability Project” to complete the assignment.

 

While APA style is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.

 

Directions: Use the following information to complete the assignment.

 

There are many misconceptions about probability which may include the following.

 

•             All events are equally likely.

 

•             Later events may be affected by or compensate for earlier ones.

 

•             When determining probability from statistical data, sample size is irrelevant.

 

•             Results of games of skill are unaffected by the nature of the participants.

 

•             “Lucky/Unlucky” numbers can influence random events.

 

•             In random events involving selection, results are dependent on number rather than rations.

 

•             If events are random, then the results of a series of independent events are equally likely.

 

The following statements are all incorrect. Explain the statements and the errors fully using the probability rules discussed in topic two.

 

1.            The number 7 is a lucky number so you are more likely to win raffles with ticket number 7 than with a different number.

 

2.            I roll two dice and add the results. The probability of getting a total of 8 is 1/12 because there are 12 different possibilities and 8 is one of them.

 

3.            Mr. Verdehas to have a major operation. Ninety-three percent of the people who have this operation make a complete recovery. There is a 93% chance that Mr. Verde will make a complete recovery if he has this operation.

 

4.            The Ramblers play the Chargers. The Ramblers can win, loose, or draw, so the probability that they win is 1/3.

 

5.            I have flipped an unbiased coin four times and got heads. It is more likely to get tails the next time I flip it.

 

6.            Thirty random college students are asked if they study during the week. Since 60% said yes, a statement can be made that 40% of students only study on the weekend.

 

7.            I have two coins. If I flip them together, the probability of getting a heads and a tails is 1/3.This is because you can only get two heads, two tails, or one head and one tail.

 

 

 

PSY520 Graduate Statistics

 

Week 3 Assignment  

 

Benchmark – Correlation and Regression Project

 

Assessment Description

 

Use the attached document “Correlation and Regression” to complete the assignment.

 

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

 

While APA style is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.

 

Benchmark Information

 

This benchmark assignment assesses the following programmatic competency:

 

MS Psychology

 

3.1 Interpret psychological phenomena using scientific reasoning.

 

Directions: Use the following information to complete the questions below.

 

Use the following data points that have a linear relationship

 

Substance Abuse and Suicide: Percent of the Total U.S. Population

 

 

 

X VARIABLE

 

Y VARIABLE

 

Year

 

Substance Use

 

Suicides

 

1999

 

6.82

 

0.000105

 

2000

 

6.78

 

0.000104

 

2001

 

7.00

 

0.000107

 

2002

 

7.12

 

0.00011

 

2003

 

7.09

 

0.000108

 

2004

 

7.05

 

0.00011

 

2005

 

7.17

 

0.000109

 

2006

 

7.24

 

0.00011

 

2007

 

7.28

 

0.000113

 

2008

 

7.36

 

0.000116

 

2009

 

7.80

 

0.000118

 

2010

 

7.81

 

0.000121

 

2011

 

7.88

 

0.000123

 

2012

 

7.87

 

0.000125

 

2013

 

8.07

 

0.000126

 

2014

 

8.12

 

0.00013

 

2015

 

8.06

 

0.000133

 

2016

 

8.17

 

0.000134

 

2017

 

8.18

 

0.00014

 

2018

 

8.23

 

0.000142

 

In 500-750 words, address the following:

 

Identify thecorrelation coefficient for each of the possible pairings of variables.Describe the relationship in terms of strength (weak/strong) and direction (positive/negative).

 

Find a linear model of the relationship between the three variables of interest. Identify the predictor variables and the criterion variable.

 

Provide an output of the SPSS results and interpret the results using correct APA style. Be sure to include the following in your interpretation:

 

•             Cause and effect concepts

 

•             Independent/dependent variable relationships?

 

•             Why is important to do random sampling?

 

•             What is regression fallacy? How may it apply to the relationships discovered?

 

 

 

PSY520 Graduate Statistics

 

Week 6 Assignment  

 

MANOVA Project

 

Assessment Description

 

Use the attached document “MANOVA Project” to complete this assignment.

 

While APA style is not required for the body of this assignment, solid academic writing is expected, and documentation of sources should be presented using APA formatting guidelines, which can be found in the APA Style Guide, located in the Student Success Center.

 

Directions:Complete this assignment in 500-750 words using the following information:

 

A researcher randomly assigns 33 subjects to one of three groups. Group 1 receives technical dietary information interactively from an online website. Group 2 receives the same information from a nurse practitioner, while Group 3 receives the information from a video made by the same nurse practitioner.

 

The researcher looked at three different ratings of the presentation: difficulty, usefulness, and importance to determine if there is a difference in the modes of presentation. In particular, the researcher is interested in whether the interactive website is superior because that is the most cost-effective way of delivering the information.

 

Group

 

Usefulness

 

Difficulty

 

Importance

 

 

 

Group

 

Usefulness

 

Difficulty

 

Importance

 

1

 

20

 

5

 

18

 

 

 

2

 

29

 

10

 

5

 

1

 

25

 

9

 

8

 

 

 

2

 

26

 

11

 

1

 

1

 

23

 

15

 

20

 

 

 

2

 

22

 

5

 

2

 

1

 

16

 

9

 

22

 

 

 

2

 

15

 

15

 

14

 

1

 

20

 

6

 

22

 

 

 

2

 

29

 

6

 

4

 

1

 

28

 

14

 

8

 

 

 

2

 

15

 

6

 

3

 

1

 

20

 

6

 

13

 

 

 

3

 

22

 

8

 

12

 

1

 

25

 

8

 

13

 

 

 

3

 

27

 

9

 

14

 

1

 

24

 

10

 

24

 

 

 

3

 

21

 

10

 

7

 

1

 

18

 

10

 

20

 

 

 

3

 

17

 

9

 

1

 

1

 

17

 

9

 

4

 

 

 

3

 

16

 

7

 

12

 

2

 

28

 

7

 

14

 

 

 

3

 

19

 

9

 

7

 

2

 

25

 

14

 

5

 

 

 

3

 

23

 

10

 

1

 

2

 

26

 

9

 

20

 

 

 

3

 

27

 

9

 

5

 

2

 

19

 

15

 

22

 

 

 

3

 

23

 

9

 

6

 

2

 

29

 

14

 

12

 

 

 

3

 

16

 

14

 

22

 

2

 

15

 

6

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

1.            Analyze the data and interpret the results using a MANOVA.

 

2.            Run a t-test using this data and interpret thoseresults.

 

3.            Compare the outcomes of the MANOVA and t-test and identify any differences. Which approach would you use? Why?

 

 

 

PSY520 Graduate Statistics

 

Week 8 Assignment  

 

Research Question Plan

 

Assessment Description

 

Based on the statistical tests in this course, this assignment requires you to write a description of a potential research project using the following scenario.

 

Scenario: Imagine you are a Math Committee Review member at the local elementary school. You have been asked to review a curriculum change for 5th graders in math.

 

In 1,250-1,500 words, address the following prompts based on the above scenario:

 

Include a brief background of the problem and why it is important. From this information, identify a clearly written research question.

 

State the null and alternative hypothesis (in both words and statistical notation) needed to address the research question.

 

Describe the type of data needing to be collected and the techniques you would use.

 

Choose which statistical test you would use to conduct the study. Support your method with research.

 

How might you report your findings? Explain the potential ethical dilemmas.

 

Use three to five scholarly resources to defend this proposal.

 

Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center.

 

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

 

You are required to submit this assignment to LopesWrite. A link to the LopesWrite technical support articles is located in Class Resources if you need assistance.