Homework Help is Here – Start Your Trial Now!
Math
Statistics
Group Statistics Std. Error Mean Age in Years N Mean Std. Deviation Math Achievement Lower than 13 553 50.6799 12.08868 51406 Higher than 14 443 50.9457 12.51362 59454 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference Significance Mean Difference Std. Error Difference Sig. df One-Sided p Two-Sided p Lower Upper Math Achievement Equal variances .770 381 -.340 994 367 734 -.26585 .78297 -1.80231 1.27061 assumed Equal variances not assumed - 338 932.565 .368 735 -26585 78596 -1.80831 1.27661 Independent Samples Effect Sizes 95% Confidence Interval Standardizer Point Estimate Lower Upper Math Achievement Cohen's d 12.27945 -.022 -147 .103 Hedges' correction 12.28873 -022 -147 .103 Glass's delta 12.51362 -.021 -146 .104 a. The denominator used in estimating the effect sizes. Cohen's d uses the pooled standard deviation. Hedges' correction uses the pooled standard deviation, plus a correction factor. Glass's delta uses the sample standard deviation of the control group.

Group Statistics Std. Error Mean Age in Years N Mean Std. Deviation Math Achievement Lower than 13 553 50.6799 12.08868 51406 Higher than 14 443 50.9457 12.51362 59454 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference Significance Mean Difference Std. Error Difference Sig. df One-Sided p Two-Sided p Lower Upper Math Achievement Equal variances .770 381 -.340 994 367 734 -.26585 .78297 -1.80231 1.27061 assumed Equal variances not assumed - 338 932.565 .368 735 -26585 78596 -1.80831 1.27661 Independent Samples Effect Sizes 95% Confidence Interval Standardizer Point Estimate Lower Upper Math Achievement Cohen's d 12.27945 -.022 -147 .103 Hedges' correction 12.28873 -022 -147 .103 Glass's delta 12.51362 -.021 -146 .104 a. The denominator used in estimating the effect sizes. Cohen's d uses the pooled standard deviation. Hedges' correction uses the pooled standard deviation, plus a correction factor. Glass's delta uses the sample standard deviation of the control group.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

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
Transcribed Image Text:**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
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS