Analyzing Paired Sample T-Test and responding in paragraph form

pairedsampletworksheet.docx

Data Analysis: paired-sample t-test

1. Research Question: Does the addition of perspective lines in the Ponso illusion change estimates of length?

a. State the null hypothesis in words and in terms of the mean:

b. State the alternative hypothesis in words and in terms of the mean:

2. Conduct a paired-samples t-test on the data and report your findings:

a. What is the mean difference between the samples?

b. What is the standard error of the mean?

c. What is the degrees of freedom?

d. What is your computed (obtained) t-value from SPSS?

e. What is the p-value (labeled Sig. in SPSS)?

f. Compare the p-value to =.05. Is the p-value higher or lower?

g. Does this indicate a significant result?

3. Write an APA-formatted results paragraph for your t-test analysis and include a histogram of the data.