Question
Part II: Use ClassData dataset (see eLearning SPSS Practice Datasets) to complete the following questions. (Output is in the attachment in eLearning) Researchers are interested
Part II: Use ClassData dataset (see eLearning SPSS Practice Datasets) to complete the following questions. (Output is in the attachment in eLearning)
Researchers are interested to investigate whether Group, Time, and interaction effect (Time Group) differences on the intensity of physical activity (steps per minute) measured on the right side of the body.
Running SPSS to perform the propriate test and generate the results. (Please see the last page for the Syntax.)
6) Write down the statistical conclusion
Overall ANOVA:
- Interaction
- Main Effect A
- Main Effect B
Main Effect A
- ANOVA Test
- Post Hoc Comparisons/Paired T tests
Main Effect B
- ANOVA Test
- Post Hoc Comparisons/ Paired T tests
8) Write down the practical conclusion (usually associated with your scientific hypothesis/Alternative hypothesis)
General Linear Model
Notes | ||
Output Created | 13-APR-2020 23:20:20 | |
Comments | ||
Input | Data | /Users/rs/Desktop/HPHE 6920_2020 Spring/Dataset/ClassData.sav |
Active Dataset | DataSet1 | |
Filter | ||
Weight | ||
Split File | ||
N of Rows in Working Data File | 58 | |
Missing Value Handling | Definition of Missing | User-defined missing values are treated as missing. |
Cases Used | Statistics are based on all cases with valid data for all variables in the model. | |
Syntax | GLM a2r a3r a4r BY group /WSFACTOR=Time 3 Polynomial /METHOD=SSTYPE(3) /PLOT=PROFILE(Time Time*group) TYPE=LINE ERRORBAR=NO MEANREFERENCE=NO YAXIS=AUTO /POSTHOC=group(TUKEY) /PRINT=DESCRIPTIVE ETASQ HOMOGENEITY /PLOT=PROFILE(group) TYPE=BAR ERRORBAR=NO MEANREFERENCE=NO YAXIS=AUTO /CRITERIA=ALPHA(.05) /WSDESIGN=Time /DESIGN=group. | |
Resources | Processor Time | 00:00:00.43 |
Elapsed Time | 00:00:00.00 |
Within-Subjects Factors | |
Measure: MEASURE_1 | |
Time | Dependent Variable |
1 | a2r |
2 | a3r |
3 | a4r |
Between-Subjects Factors | ||
N | ||
group | 1.00 | 20 |
2.00 | 21 | |
3.00 | 17 |
Descriptive Statistics | ||||
group | Mean | Std. Deviation | N | |
low day2 right | 1.00 | 3449.2000 | 1282.00577 | 20 |
2.00 | 2790.4762 | 851.86029 | 21 | |
3.00 | 4664.6471 | 1662.27479 | 17 | |
Total | 3566.9483 | 1471.20598 | 58 | |
low day3 right | 1.00 | 2324.9500 | 1369.62721 | 20 |
2.00 | 2506.5238 | 627.83100 | 21 | |
3.00 | 4088.7647 | 1187.85718 | 17 | |
Total | 2907.6724 | 1324.44282 | 58 | |
low day4 right | 1.00 | 2743.9500 | 806.97150 | 20 |
2.00 | 2821.4286 | 1237.47806 | 21 | |
3.00 | 3932.2941 | 1332.13179 | 17 | |
Total | 3120.3103 | 1237.64332 | 58 |
Box's Test of Equality of Covariance Matricesa | |
Box's M | 34.539 |
F | 2.647 |
df1 | 12 |
df2 | 13518.022 |
Sig. | .002 |
Tests the null hypothesis that the observed covariance matrices of the dependent variables are equal across groups.a | |
a. Design: Intercept + group Within Subjects Design: Time |
Multivariate Testsa | |||||||
Effect | Value | F | Hypothesis df | Error df | Sig. | Partial Eta Squared | |
Time | Pillai's Trace | .461 | 23.084b | 2.000 | 54.000 | .000 | .461 |
Wilks' Lambda | .539 | 23.084b | 2.000 | 54.000 | .000 | .461 | |
Hotelling's Trace | .855 | 23.084b | 2.000 | 54.000 | .000 | .461 | |
Roy's Largest Root | .855 | 23.084b | 2.000 | 54.000 | .000 | .461 | |
Time * group | Pillai's Trace | .239 | 3.724 | 4.000 | 110.000 | .007 | .119 |
Wilks' Lambda | .769 | 3.782b | 4.000 | 108.000 | .006 | .123 | |
Hotelling's Trace | .290 | 3.837 | 4.000 | 106.000 | .006 | .126 | |
Roy's Largest Root | .248 | 6.833c | 2.000 | 55.000 | .002 | .199 | |
a. Design: Intercept + group Within Subjects Design: Time | |||||||
b. Exact statistic | |||||||
c. The statistic is an upper bound on F that yields a lower bound on the significance level. |
Mauchly's Test of Sphericitya | |||||||
Measure: MEASURE_1 | |||||||
Within Subjects Effect | Mauchly's W | Approx. Chi-Square | df | Sig. | Epsilonb | ||
Greenhouse-Geisser | Huynh-Feldt | Lower-bound | |||||
Time | .601 | 27.504 | 2 | .000 | .715 | .755 | .500 |
Tests the null hypothesis that the error covariance matrix of the orthonormalized transformed dependent variables is proportional to an identity matrix.a | |||||||
a. Design: Intercept + group Within Subjects Design: Time | |||||||
b. May be used to adjust the degrees of freedom for the averaged tests of significance. Corrected tests are displayed in the Tests of Within-Subjects Effects table. |
Tests of Within-Subjects Effects | |||||||
Measure: MEASURE_1 | |||||||
Source | Type III Sum of Squares | df | Mean Square | F | Sig. | Partial Eta Squared | |
Time | Sphericity Assumed | 13314125.377 | 2 | 6657062.689 | 10.501 | .000 | .160 |
Greenhouse-Geisser | 13314125.377 | 1.429 | 9313936.732 | 10.501 | .000 | .160 | |
Huynh-Feldt | 13314125.377 | 1.510 | 8815274.109 | 10.501 | .000 | .160 | |
Lower-bound | 13314125.377 | 1.000 | 13314125.377 | 10.501 | .002 | .160 | |
Time * group | Sphericity Assumed | 6101069.761 | 4 | 1525267.440 | 2.406 | .054 | .080 |
Greenhouse-Geisser | 6101069.761 | 2.859 | 2134010.915 | 2.406 | .076 | .080 | |
Huynh-Feldt | 6101069.761 | 3.021 | 2019757.242 | 2.406 | .073 | .080 | |
Lower-bound | 6101069.761 | 2.000 | 3050534.880 | 2.406 | .100 | .080 | |
Error(Time) | Sphericity Assumed | 69734561.699 | 110 | 633950.561 | |||
Greenhouse-Geisser | 69734561.699 | 78.622 | 886964.070 | ||||
Huynh-Feldt | 69734561.699 | 83.069 | 839476.542 | ||||
Lower-bound | 69734561.699 | 55.000 | 1267901.122 |
Tests of Within-Subjects Contrasts | |||||||
Measure: MEASURE_1 | |||||||
Source | Time | Type III Sum of Squares | df | Mean Square | F | Sig. | Partial Eta Squared |
Time | Linear | 6323936.348 | 1 | 6323936.348 | 6.454 | .014 | .105 |
Quadratic | 6990189.029 | 1 | 6990189.029 | 24.266 | .000 | .306 | |
Time * group | Linear | 3757654.406 | 2 | 1878827.203 | 1.917 | .157 | .065 |
Quadratic | 2343415.355 | 2 | 1171707.677 | 4.068 | .023 | .129 | |
Error(Time) | Linear | 53891071.292 | 55 | 979837.660 | |||
Quadratic | 15843490.407 | 55 | 288063.462 |
Levene's Test of Equality of Error Variancesa | |||||
Levene Statistic | df1 | df2 | Sig. | ||
low day2 right | Based on Mean | 3.043 | 2 | 55 | .056 |
Based on Median | 2.925 | 2 | 55 | .062 | |
Based on Median and with adjusted df | 2.925 | 2 | 47.370 | .063 | |
Based on trimmed mean | 3.025 | 2 | 55 | .057 | |
low day3 right | Based on Mean | 1.697 | 2 | 55 | .193 |
Based on Median | 1.238 | 2 | 55 | .298 | |
Based on Median and with adjusted df | 1.238 | 2 | 36.082 | .302 | |
Based on trimmed mean | 1.358 | 2 | 55 | .266 | |
low day4 right | Based on Mean | 1.847 | 2 | 55 | .167 |
Based on Median | 1.417 | 2 | 55 | .251 | |
Based on Median and with adjusted df | 1.417 | 2 | 47.305 | .253 | |
Based on trimmed mean | 1.860 | 2 | 55 | .165 | |
Tests the null hypothesis that the error variance of the dependent variable is equal across groups.a | |||||
a. Design: Intercept + group Within Subjects Design: Time |
Tests of Between-Subjects Effects | ||||||
Measure: MEASURE_1 | ||||||
Transformed Variable: Average | ||||||
Source | Type III Sum of Squares | df | Mean Square | F | Sig. | Partial Eta Squared |
Intercept | 1831968103.315 | 1 | 1831968103.315 | 638.880 | .000 | .921 |
group | 77123889.084 | 2 | 38561944.542 | 13.448 | .000 | .328 |
Error | 157710817.491 | 55 | 2867469.409 |
Post Hoc Tests
group
Multiple Comparisons | ||||||
Measure: MEASURE_1 | ||||||
Tukey HSD | ||||||
(I) group | (J) group | Mean Difference (I-J) | Std. Error | Sig. | 95% Confidence Interval | |
Lower Bound | Upper Bound | |||||
1.00 | 2.00 | 133.2238 | 305.46120 | .901 | -602.5562 | 869.0038 |
3.00 | -1389.2020* | 322.51519 | .000 | -2166.0608 | -612.3431 | |
2.00 | 1.00 | -133.2238 | 305.46120 | .901 | -869.0038 | 602.5562 |
3.00 | -1522.4258* | 318.96752 | .000 | -2290.7391 | -754.1124 | |
3.00 | 1.00 | 1389.2020* | 322.51519 | .000 | 612.3431 | 2166.0608 |
2.00 | 1522.4258* | 318.96752 | .000 | 754.1124 | 2290.7391 | |
Based on observed means. The error term is Mean Square(Error) = 955823.136. | ||||||
*. The mean difference is significant at the |
Homogeneous Subsets
MEASURE_1 | |||
Tukey HSDa,b,c | |||
group | N | Subset | |
1 | 2 | ||
2.00 | 21 | 2706.1429 | |
1.00 | 20 | 2839.3667 | |
3.00 | 17 | 4228.5686 | |
Sig. | .907 | 1.000 | |
Means for groups in homogeneous subsets are displayed. Based on observed means. The error term is Mean Square(Error) = 955823.136. | |||
a. Uses Harmonic Mean Sample Size = 19.176. | |||
b. The group sizes are unequal. The harmonic mean of the group sizes is used. Type I error levels are not guaranteed. | |||
c. Alpha = |
Profile Plots
T-TEST PAIRS=a2r a2r a3l WITH a3l a4r a4r (PAIRED)
/CRITERIA=CI(.9500)
/MISSING=ANALYSIS.
T-Test
Notes | ||
Output Created | 13-APR-2020 23:20:20 | |
Comments | ||
Input | Data | /Users/rs/Desktop/HPHE 6920_2020 Spring/Dataset/ClassData.sav |
Active Dataset | DataSet1 | |
Filter | ||
Weight | ||
Split File | ||
N of Rows in Working Data File | 58 | |
Missing Value Handling | Definition of Missing | User defined missing values are treated as missing. |
Cases Used | Statistics for each analysis are based on the cases with no missing or out-of-range data for any variable in the analysis. | |
Syntax | T-TEST PAIRS=a2r a2r a3l WITH a3l a4r a4r (PAIRED) /CRITERIA=CI(.9500) /MISSING=ANALYSIS. | |
Resources | Processor Time | 00:00:00.00 |
Elapsed Time | 00:00:00.00 |
Paired Samples Statistics | |||||
Mean | N | Std. Deviation | Std. Error Mean | ||
Pair 1 | low day2 right | 3566.9483 | 58 | 1471.20598 | 193.17881 |
low day3 left | 3009.5517 | 58 | 1391.12743 | 182.66398 | |
Pair 2 | low day2 right | 3566.9483 | 58 | 1471.20598 | 193.17881 |
low day4 right | 3120.3103 | 58 | 1237.64332 | 162.51053 | |
Pair 3 | low day3 left | 3009.5517 | 58 | 1391.12743 | 182.66398 |
low day4 right | 3120.3103 | 58 | 1237.64332 | 162.51053 |
Paired Samples Correlations | ||||
N | Correlation | Sig. | ||
Pair 1 | low day2 right & low day3 left | 58 | .769 | .000 |
Pair 2 | low day2 right & low day4 right | 58 | .460 | .000 |
Pair 3 | low day3 left & low day4 right | 58 | .644 | .000 |
Paired Samples Test | |||||||
Paired Differences | t | ||||||
Mean | Std. Deviation | Std. Error Mean | 95% Confidence Interval of the Difference | ||||
Lower | Upper | ||||||
Pair 1 | low day2 right - low day3 left | 557.39655 | 976.47407 | 128.21733 | 300.64578 | 814.14732 | 4.347 |
Pair 2 | low day2 right - low day4 right | 446.63793 | 1422.23848 | 186.74906 | 72.67938 | 820.59648 | 2.392 |
Pair 3 | low day3 left - low day4 right | -110.75862 | 1117.30957 | 146.70993 | -404.54020 | 183.02296 | -.755 |
Paired Samples Test | ||||
df | Sig. (2-tailed) | |||
Pair 1 | low day2 right - low day3 left | 57 | .000 | |
Pair 2 | low day2 right - low day4 right | 57 | .020 | |
Pair 3 | low day3 left - low day4 right | 57 | .453 |
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