An Exponential-Cum-Sine-Type Hybrid Imputation Technique for Missing Data

Table 1

Sample structure and notations.

Structure	Size
Population	N
Sample	N
Respondents	R
Nonrespondents	N − r
Characteristic	Notation
The population mean of Y
The population mean of X
The sample mean of based on the responding part of the sample
The sample mean of based on the responding part of the sample
The sample means of , respectively, based on the entire sample
The correlation coefficient between and
The population mean square of
The population mean square of
The coefficient of variation of
The coefficient of variation