org.statcato.statistics.inferential
Class CIMatchedPairs
java.lang.Object
org.statcato.statistics.inferential.ConfidenceInterval
org.statcato.statistics.inferential.CIMatchedPairs
public class CIMatchedPairs
- extends ConfidenceInterval
Confidence interval class for matched pairs.
- Since:
- 1.0
- Version:
- %I%, %G%
- Author:
- Margaret Yau
Constructor Summary |
CIMatchedPairs(double confidenceLevel,
int n,
double mu,
double s)
Constructor. |
Method Summary |
double |
criticalValue()
Returns the critical value corresponding to the given confidence level. |
double |
marginOfError()
Returns the margin of error. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
CIMatchedPairs
public CIMatchedPairs(double confidenceLevel,
int n,
double mu,
double s)
- Constructor.
- Parameters:
confidenceLevel
- confidence level, between 0 and 1n
- sample size (number of matched pairs)mu
- sample mean of differencess
- sample standard deviation of differences
marginOfError
public double marginOfError()
- Returns the margin of error. E = t_(alpha/2) * s / sqrt(n).
- Specified by:
marginOfError
in class ConfidenceInterval
- Returns:
- margin of error
criticalValue
public double criticalValue()
- Returns the critical value corresponding to the given confidence level.
Uses the t distribution to find t_(alpha/2), where alpha is
the significance level (1 - confidence level).
- Specified by:
criticalValue
in class ConfidenceInterval
- Returns:
- critical value