What are the techniques (such as KNN, Max likelihood) that I can use to find the missing values? I want to use R and trying to find a suitable technique to impute the missing values.
The sample data is shown below:
F1 F2 F3 F4 F5 Class
Good 20 5 7 Old Normal
Good Missing 8 8 Old Normal
Good 15 10 10 Old Normal
Good 50 10 10 Old Normal
Good 70 10 10 Old Abnormal
Bad 20 5 7 Old Abnormal
Good 20 5 80 Old Abnormal
Good 85 100 100 Old Abnormal
Good 20 100 Missing Old Abnormal
Good 24 6 8.4 Old Normal
Good 12 9.6 9.6 Old Normal
Good 18 12 12 Old Normal
Good 60 12 12 Old Normal
Good 84 Missing 12 Old Abnormal
Bad 24 6 8.4 Old Abnormal
Good 24 6 96 Old Abnormal
Good 102 120 120 Old Abnormal
Good 24 120 72 Old Abnormal