“…Furthermore, on average, these residuals are similar in terms of variability if is approximately unbiased for , or equivalently, if the estimator of has little or no bias. Using and , we define the of as Chen et al (2019) proposed a pseudo‐population bootstrap procedure for estimating the variance of imputed estimators. Their bootstrap population is based on Equation (20), where the set of residuals represents an independent and identically distributed sample of size N selected from , and the are some standardised centred versions of residuals , for .…”