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Confidence interval for the Non-centrality parameter of Non-central chi-squared distribution
chi.noncentral.conf(chival,df,conf,prec=.00001)
A 2X2 matrix whose rows represent the upper and lower bounds, and whose columns represent the parameter value and upper tail percentiles.
The observed Chi-Squared value
The confidence level (e.g. .95)
Degrees of freedom
Precision of estimate
Smithson, M.J. (2003). Confidence Intervals, Quantitative Applications in the Social Sciences Series, No. 140. Thousand Oaks, CA: Sage.
Chisquare
chi.noncentral.conf(6,1,.95) # Result: # Non-Central % #Lower 0.2089385 0.97500899 #Upper 19.4443359 0.02499302
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