"Figure 4: Imputation showing “delayed changes” in the laptops index (t equals number of months filled forward)","" "Effect of imputation on the laptops index, UK, November 2018 to June 2019","" "","" "Notes","" "Unit","November 2018 = 100" "","" "","No imputation","t = 1","t = 2","t = 3" "Nov-2018","100","100","100","100" "Dec-2018","98.4","98.5","98.5","98.5" "Jan-2019","99.6","99.3","99.4","99.4" "Feb-2019","98.1","98.8","98.7","98.8" "Mar-2019","97","96.9","97.7","97.7" "Apr-2019","96.9","96.6","96.5","97.3" "May-2019","96.5","96.3","96","96" "Jun-2019","95.1","94.8","94.8","94.7"