Is there a significant difference between age groups in math achievement? **Group Statistics**- **Math Achievement** | Age in Years | N | Mean | Std. Deviation | Std. Error Mean | |-------------------|-----|--------|----------------|-----------------| | Lower than 13 | 553 | 50.6799 | 12.08868 | 0.51406 | | Higher than 14 | 443 | 50.9457 | 12.51362 | 0.59444 |**Independent Samples Test**- **Levene's Test for Equality of Variances** | | F | Sig. | |-------------------------|------|--------| | Math Achievement | 0.770| 0.381 |- **t-test for Equality of Means** | | t | df | Significance | Mean Difference | Std. Error Difference | 95% Confidence Interval of the Difference | | | | | One-Sided p | Two-Sided p | | Lower | Upper | |-------------------------|-------|--------|-------------|----------------|-----------------------|-----------------|-----------------| | Equal variances assumed | -0.340| 994 | 0.367 | 0.734 | -0.26585 | 0.78297 | -1.80231 | 1.27061 | | Equal variances not assumed | -0.338| 932.565 | 0.368 | 0.735 | -0.26585 | 0.78596 | -1.80831 | 1.27661 |**Independent Samples Effect Sizes**- **Math Achievement** | Standardizer | Point Estimate | 95% Confidence Interval | | | | Lower | Upper | |-----------------------|----------------|-------|------------------| | **Cohen's d** | 12.27945 | -0.022| 0.147 | 0.103 | | **Hedges' correction**| 12.28873 | -0.022| 0.147 | 0.103 | | **Glass's delta** | 12.51362 | -0.021| 0

Introduction - In statistics , significant different means that the null hypothesis is true means…

Answered: Group Statistics Std. Error Mean Age in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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