Conduct a Wilcoxon Signed-Rank test

Assignment Help Applied Statistics

Reference no: EM132279630

Assignment - SPSS Paired t-Test, Wilcoxon Signed-Rank Test

1. Please import the provided Excel dataset and preview the document to SPSS to see if you can produce the following output that aligns with the two prompts.

2. Please share whether you are able to produce the same output and state what the results reveal to you.

Complete the following:

PART I -

Conduct a paired t-test to assess whether significant mean differences exist between Pretest 1 and Posttest 1 scores among the one sample of students.

Paired Samples Statistics -

		Mean	N	Std. Deviation	Std. Error
Pair 1	PreTest 1	82.23	30	5.386	.983
	Post Test 1	84.33	30	7.038	1.285

Paired Samples Correlations -

		N	Correlation	Sig.
Pair 1	PreTest 1 & PostTest 1	30	.687	.000

Paired Samples Test -

Paired Differences
					95% Confidence Interval of the Difference
		Mean	Std. Deviation	Std. Error Mean	Lower	Upper	t	df	Sig. (2-tailed)
Pair 1	PreTest 1 - PostTest 1	-2.100	5.142	.939	-4.020	-.180	-2.237	29	.033

PART II -

Conduct a Wilcoxon Signed-Rank test to assess whether significant mean differences exist between Pretest 1 and Posttest 1 scores among the one sample of students.

Wilcoxon Signed-Rank Test

Ranks
		N	Mean Rank	Sum of Ranks
PostTest 1 - PreTest 1	Negative Ranks	9^a	11.72	105.50
	Positive Ranks	18^b	15.14	272.50
	Ties	3^c
	Total	30

a. PostTest 1 < PreTest 1

b. PostTest 1 > PreTest 1

c. PostTest 1 = PreTest 1

Test Statistics^a

	PostTest 1 - PreTest 1
Z	-2.012^b
Asymp. Sig. (2-tailed)	.044

a. Wilcoxon Signed Ranks Test.

b. Based on negative ranks.

Note - Please complete the two questions using the provided Excel dataset.

Attachment:- Assignment Files.rar

Reference no: EM132279630

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