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Statistical Analysis of a Pretest-Posttest

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Agari Rigen

Academic year: 2024

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Frequencies

Statistics

PRETEST POSTEST

N Valid 30 30

Missing 0 0

Frequency Table

PRETEST

Frequency Percent Valid Percent

Cumulative Percent

Valid 4 – 6 Nyeri sedang 20 66.7 66.7 66.7

7 – 9 Nyeri berat 10 33.3 33.3 100.0

Total 30 100.0 100.0

POSTEST

Frequency Percent Valid Percent

Cumulative Percent

Valid 1 – 3 Nyeri ringan 20 66.7 66.7 66.7

4 – 6 Nyeri sedang 10 33.3 33.3 100.0

Total 30 100.0 100.0

NPAR TESTS

/WILCOXON=PRETES WITH POSTEST (PAIRED) /MISSING ANALYSIS.

NPar Tests

Wilcoxon Signed Ranks Test

Ranks

N Mean Rank Sum of Ranks

POSTEST - PRETEST Negative Ranks 30a 15.50 465.00

Positive Ranks 0b .00 .00

Ties 0c

Total 30

a. POSTEST < PRETEST b. POSTEST > PRETEST c. POSTEST = PRETEST

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Test Statisticsa

POSTEST - PRETEST

Z -5.477b

Asymp. Sig. (2-tailed) .000 a. Wilcoxon Signed Ranks Test

b. Based on positive ranks.

FREQUENCIES VARIABLES=PRETES POSTEST /PERCENTILES=25.0 50.0 75.0

/STATISTICS=STDDEV VARIANCE RANGE MINIMUM MAXIMUM MEAN MEDIAN MODE SUM SKEWNESS SESKEW KURTOSIS SEKURT

/ORDER=ANALYSIS.

Frequencies

Statistics

PRETEST POSTEST

N Valid 30 30

Missing 0 0

Mean 3.33 2.33

Median 3.00 2.00

Mode 3 2

Std. Deviation .479 .479

Variance .230 .230

Skewness .745 .745

Std. Error of Skewness .427 .427

Kurtosis -1.554 -1.554

Std. Error of Kurtosis .833 .833

Range 1 1

Minimum 3 2

Maximum 4 3

Sum 100 70

Percentiles 25 3.00 2.00

50 3.00 2.00

75 4.00 3.00

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