dominion training survey
DESCRIPTION
Dominion Training Survey. BADM 621 October 19,2005 Shawn Miller Kylee Fink Soumya Prasad Thomas O’Neill Casey Brown. Area Explanation. Geographic Location & Test Scores. Ho – There is no difference in test scores when comparing the four geographic locations. P-value = 0.01338 - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/1.jpg)
Dominion Training Survey
BADM 621
October 19,2005
Shawn Miller
Kylee Fink
Soumya Prasad
Thomas O’Neill
Casey Brown
![Page 2: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/2.jpg)
Area Explanation
![Page 3: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/3.jpg)
Statistic Southern Western Northeastern Central
Count 30 17 24 14
Mean 8.70 8.76 8.04 9.14
Median 9 9 8 9
Standard Deviation 1.09 0.97 1.16 0.77
Variance 1.18 0.94 1.34 0.59
Region
Descriptive Statistics - Test Scores
![Page 4: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/4.jpg)
Geographic Location & Test Scores
• Ho – There is no difference in test scores when comparing the four geographic locations.
• P-value = 0.01338
• F = 3.79354, F crit = 2.71734
• Conclusion – There is a difference (Ha).
![Page 5: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/5.jpg)
Location/Test Score Detail
• Central performed significantly higher in comparison to the sample average.
– Mean = 9.142857, P-value = 0.015935
• Northeastern performed significantly lower in comparison to the sample average.
– Mean = 8.041667, P-value = 0.015724
![Page 6: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/6.jpg)
Practice makes perfect?
• Hypothesis: Talks given in the Northeastern and Central regions were better because the instructors had given the talk at least twice already, at the Southern and Western regions.
![Page 7: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/7.jpg)
Cont…
• 2 columns: Early sessions (Southern + Western) vs. later ones (Northeastern + Central).
• 2 categories (early vs. late) compared on a continuous variable (test score, quality score): Use t-test.
![Page 8: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/8.jpg)
Test score:
• F-test gives a p-value of 0.26 => Equal variances;
• T-test: p-value: 0.25
• Statistically speaking…Test score did not show that the instructors “practice” had helped.
![Page 9: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/9.jpg)
Quality score:
• F-test gives a p-value of 0.44=> Equal variances;
• T-test: p-value: 0.163
• Statistically speaking…The quality score did not show that the instructors “practice” had helped.
![Page 10: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/10.jpg)
Quality Score (cont.)
• In theory, practice should improve scores.• Perhaps:
(a) The time period between the early and late sessions (1 week) was not adequate.(b) Inherent difference in quality of speakers.(c) Inherent difference in quality of audiences.
![Page 11: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/11.jpg)
Why did some people fare better?
• Hypothesis: Perception of having enough time resulted in a better test score.
• Relationship between the 2 continuous variables of time and test score: Correlation function
• Correlation = 0.19; Yes, there is a positive linear correlation between perception of having enough time and final test score.
![Page 12: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/12.jpg)
Cont…
• Did the perception of having time predict a better test score? Use simple linear regression.
• Dependent variable = Test score, independent variable = perception of time.
• Regression: P-value: 0.08• Perception of more time did not predict a
better test score.
![Page 13: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/13.jpg)
Supporting Evidence
• Hypothesis: Perception of higher knowledge before training resulted in a better test score.
• Correlation = 0.22; Yes, there is a positive linear correlation between perception of knowledge base and final test score.
![Page 14: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/14.jpg)
Helpful talks?
• Was there a relationship between perception of base knowledge and gain in knowledge from the talks?
• Correlation: r=0.69, positive linear correlation exists.
![Page 15: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/15.jpg)
Cont..
• Does the perceived higher base knowledge predict a higher post-talk knowledge?
• Regression: Dependent variable = knowledge after, independent = base knowledge.
![Page 16: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/16.jpg)
• P-value= 1.26E-13, almost 0• Knowledge after = knowledge before (0.43) + 5.53
• R square = 0.48
• 48% of the variance in the data can be explained by this regression; “Goodness of fit” is high.
![Page 17: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/17.jpg)
Self Assessment Scores
• Is there a relationship between self assessment scores and actual test scores?
• At first glance, individuals in the Northeastern Area indicated they learned more than others during the training – an average increase of 2.95 on a 10 point scale.
• Northeastern had the poorest test scores.
![Page 18: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/18.jpg)
Self Assessment Scores (cont.)
• Is this significant?
• F-test yields p value of 0.34
• T-test (for equal variances) yields P value of 0.99 – not significantly different from
the mean across all areas.
![Page 19: Dominion Training Survey](https://reader033.vdocument.in/reader033/viewer/2022051622/568150fb550346895dbf1996/html5/thumbnails/19.jpg)
Questions?