Research Article

Shewhart-Type Charts for Masked Data: A Strategy for Handling the Privacy Issue

Table 3

SD of RL for various combinations of shift size and different values of p.

ModelShift size
0.000.150.250.500.751.001.502.00

0.0B-L372.09339.742321.813258.143197.926142.76578.600144.1666
G-B
G-A369.87400.5142384.4229328.001266.0078195.263104.712162.03925

0.1B-L372.24352.019330.247267.846204.118154.63686.016549.4626
G-B471.5541476.5019474.4081474.7369467.3532462.7542453.5529427.5192
G-A369.87375.5852380.7511336.6681263.7833204.777115.457866.53543

0.2B-L375.32348.609328.335269.888214.983162.28993.459453.0225
G-B381.0626385.9171386.5853373.0959382.6268366.7557344.6503303.1005
G-A369.87373.2505368.2201328.723269.6875211.3197117.172768.66155

0.3B-L360.3352.365342.078279.144224.088169.749100.51259.309
G-B369.87379.263379.5516378.5992367.9928366.0251325.6226281.3075
G-A369.87379.478382.7745347.4199276.4673213.9339126.893774.74401

0.4B-L370.36367.313351.847292.906235.889183.75106.49367.5446
G-B375.2276378.9434378.3174373.0098363.7104337.0259276.1298213.2526
G-A369.87373.6151399.827341.0555281.6622221.3972126.922776.64965

0.5B-L372.62361.48349.226307.06250.373195.474119.04271.4328
G-B369.87375.336375.5363363.3669338.9533318.8717241.2932166.4109
G-A369.87380.0005378.9083335.1135274.0873221.1388125.557475.77655

0.6B-L379.83368.302372.248321.424264.616206.768128.6581.3299
G-B369.87375.5585378.5004350.1959327.5603284.2656186.9165114.9939
G-A369.87391.0121382.7347353.1478290.3852225.5492131.768783.05028

0.7B-L372.39374.482390.751343.233275.894224.354141.13691.4099
G-B369.87377.5398375.3722349.39293.6737241.1474139.459775.68841
G-A369.87405.9803432.2446388.1164310.4707237.755143.365485.91976

0.8B-L366.338381.036390.31354.569284.41236.836153.799100.455
G-B369.87374.9014371.9819322.1747245.773190.582493.3061543.76641
G-A369.87395.0287394.5415361.0619286.6851228.0623126.292477.97229

0.9B-L368.42404.066397.187382.3319.119253.742172.752113.99
G-B369.87370.268357.3045276.6619190.1431122.521747.7294919.11604
G-A369.87390.3073410.1353367.7251280.2753213.2582120.164266.91047

1.0B-L377.155337.864279.979155.51881.904243.839214.46685.97265
G-B369.87331.2344279.4253160.154784.0397342.4724614.450135.613285
G-A369.87338.2211280.1716155.707482.0976843.8521114.402695.878676
0.17870.15770.161110.13550.11450.113320.08960.0705