Exercise 1

Create a data file in SPSS using the following memory scores for this sample of 15 fictional patients with dementia:

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Higher memory number indicates better memory performance. Use this information to complete the following in SPSS.

17)

Run descriptive statistics on the dementia patients' memory scores (make sure to include the mean and confidence interval by using the "Explore" option as shown in this week's presentation).

Answer: SPSS output of descriptive statistics

18)

You want to compare your sample dementia patients with a population of age matched controls, and you only know their mean (m = 13.1). Run a single sample t test. Paste the output below. 2pts

Answer: SPSS output of the t-Test

19)

Write a results section in current APA style describing the outcome.

All homework results sections must follow the example given in the SPSS presentation and in the textbook. Results sections are multiple sentences (a single paragraph) and must include the APA-formatted statistical statement and whether the null hypothesis is accepted or rejected.

Answer:

20)

You want to compare your sample dementia patients with a population of patients with TBI and you only know their mean (m = 8.5). Run a single sample t test. Paste the output below. 2pts

Answer: SPSS output of the t-Test

21)

Write a results section in current APA style describing the outcome.

All homework results sections must follow the example given in the SPSS presentation and in the textbook. Results sections are multiple sentences (a single paragraph) and must include the APA-formatted statistical statement and whether the null hypothesis is accepted or rejected.

Answer:

Answer the following questions about measures of central tendency and variability using the 6 datum provided in the box. Do not round when calculating these answers.

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22) Which measure of central tendency is most if the data are not skewed, do not contain any outliers, and are interval/ratio?

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23) Calculate the measure of central tendency in the previous answer. Show your work (if applicable) in the "work" section and make sure your final answer is displayed in the "Answer" section. Do not round.

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Work:

24) Which measure of central tendency would be most appropriate if the data were nominal?

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25) Calculate the measure of central tendency in the previous answer. Show your work (if applicable) in the "work" section and make sure your final answer is displayed in the "Answer" section.

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Work:

26) What is the range of the data?

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27) Calculate the Standard Deviation (Note: Compute by hand using the formula from Module 4 and do not round until the end - when you can report two decimal places. Programs like SPSS or Excel use a slightly different formula that we won't use until later and will give you the wrong answer for this section.)

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Work:

A counselor wants to study the relationship between use of social media and number of friends one talks to on a daily basis face-to-face. He collects scores from a sample of 15 patients on two measures: one is a a self-report use of social medial on which higher scores indicate more use of social media (possible range of scores = 0- 30), and the other was a single question - "On average, how many different people do you talk to face-to-face that you consider a friend per week?".

Is there a significant relationship between these variables? Choose the correct test to analyze this question, set up the SPSS file, and run the analysis. Paste the output, the correct graph to display this relationship, and using complete sentences, report the results in APA style.

Social media

Friends

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28) Paste appropriate SPSS output.

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29) Paste appropriate SPSS graph.

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30) Write a Results section in current APA style describing the outcome using complete sentences. Make sure you report the statistical notation in APA format, and explicitly state whether you accept or reject the null hypothesis.

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