strata {SamplingStrata} | R Documentation |
Dataframe containing information on strata in the frame
Description
Dataframe containing information on strata in the frame
Usage
data(strata)
Format
The strata data frame (strata) contains a row per stratum with the following variables:
- stratum
-
Identifier of the stratum (numeric)
- N
-
Number of population units in the stratum (numeric)
- X1
-
Value of first auxiliary variable X1 in the stratum (factor)
- Xi
-
Value of i-th auxiliary variable Xi in the stratum (factor)
- Xk
-
Value of last auxiliary variable Xk in the stratum (factor)
- M1
-
Mean in the stratum of the first variable Y1 (numeric)
- Mj
-
Mean in the stratum of the j-th variable Yt (numeric)
- Mn
-
Mean in the stratum of the last variable Y (numeric)
- S1
-
Standard deviation in the stratum of the first variable Y (numeric)
- Sj
-
Standard deviation in the stratum of the j-th variable Yt (numeric)
- Sn
-
Standard deviation in the stratum of the last variable Y (numeric)
- cens
-
Flag (1 indicates a take all straum, 0 a sampling stratum) (numeric) Default = 0
- cost
-
Cost per interview in each stratum. Default = 1 (numeric)
- DOM1
-
Value of domain to which the stratum belongs (factor or numeric)
Details
Note: the names of the variables must be the ones indicated above
Examples
# data(strata)
# head(strata)