## Absences and Exam Grades: Correlation Analysis### Data Table| # of Absences (in weeks) | Exam Grade ||--------------------------|------------|| 1 | 90 || 2 | 85 || 3 | 95 || 4 | 92 || 5 | 80 |### AnalysisA correlation analysis of the data showed a Pearson correlation coefficient ($ r $) value of **-0.98**. This implies a very strong negative correlation between the number of absences in weeks and exam grades. This means that as absences increase, exam grades tend to decrease. The significance of this correlation was tested with a $ p $-value of **0.004** and an alpha level ($ \alpha $) of **0.01**. Since the $ p $-value is less than $ \alpha $, the correlation is statistically significant.**Conclusion:** There is a statistically significant correlation between the number of absences in class and exam grades.

Given: n = 5 The correlation coefficient r = -0.98 α = 0.01 Formula Used: Test-statistic t =…

Answered: 2. # of Absences (in weeks) Exam Grade…

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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