Description Usage Arguments Details Value References Examples
Calculate the noncentrality parameter as well as the model missipecification epsilon_t given its lower-tail critical value.
1 |
T |
A chi-square statistic |
df |
Degrees of freedom |
N |
Total sample size of all groups |
m |
Number of groups |
alpha |
Significance level. Default at 0.05. |
This function is to compute the noncentrality parameter ncp
, the model missipecification epsilon_t
, and its corresponding RMSEA_t
. With equivalence testing, the model missipecification is also the minimum tolerable size that a researcher needs to tolerate if one wishes to proceed with further restricted tests. The formula from Venables (1975) is used for obtaining the noncentrality parameter of a non-central chi-square distribution given its lower-tail critical value.
The noncentrality parameter ncp
, the minimum tolerable size epsilon_t
, and RMSEA_t
under equivalence testing.
Yuan, K. H., & Chan, W. (2016). Measurement invariance via multigroup SEM: Issues and solutions with chi-square-difference tests. Psychological methods, 21(3), 405-426.
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