| calc_df {PUMP} | R Documentation |
Calculate degrees of freedom (support function)
Description
Given sample sizes, return the used degrees of freedom (frequently conservative) for the design and model.
Usage
calc_df(d_m, J, K, nbar, numCovar.1, numCovar.2, numCovar.3, validate = TRUE)
Arguments
d_m |
string; a single context, which is a design and model code. See pump_info() for list of choices. |
J |
scalar; the harmonic mean of number of level 2 units per level 3 unit (schools per district). Note that this is not the total number of level 2 units, but instead the number of level 2 units nested within each level 3 unit, so the total number of level 2 units is J x K. |
K |
scalar; the number of level 3 units (districts). |
nbar |
scalar; the harmonic mean of the number of level 1 units per level 2 unit (students per school). Note that this is not the total number of level 1 units, but instead the number of level 1 units nested within each level 2 unit, so the total number of level 1 units is nbar x J x K. |
numCovar.1 |
scalar; number of level 1 (individual) covariates. |
numCovar.2 |
scalar; number of level 2 (school) covariates. |
numCovar.3 |
scalar; number of level 3 (district) covariates. |
validate |
logical; whether or not to validate if output df is <= 0. |
Value
scalar; degrees of freedom for the context.