Six Sigma for life,

1. Data Collection Plan Example:
# Y or X
Title of
Measure
Operational Definition
Method/
Source
Unit of
Measure
Type of
Data
Collection
Frequency
Sampling
Method
Sample
Size
Time
Frame
1 Big Y
Maintenance
Cost
All running cost
elements of estate
ADMN
Records
Rs. Continuous Monthly
Systematic
Sampling
200
8
months
(historic
data)
2 CTQ
Electrical
Consumption
Actual Electrical
consumption as per
H T meter
H T Meter Units Continuous Once in a day
3 X
A/C
Temperature
Actual air conditioned
temperature of the
ambience
Digital
Thermometer Deg C Continuous
Once in 3
hours
4 X Light Intensity
Intensity of artificial
light measured
without considering
natural light
conditions
Digital lux
meter Lux Continuous Once

2. Data Collection (Case Study)
Y (Cont) Y (Discrete) X1 X2 X3 X4 X5 X6 X7 X8 X9 X10
S.No. TAT in
Hours
Defects /
Non
Defects
Invoice
Receipt Purchase
Date
Type of Payment
Value
No. of Processing Time Time in queue Disbursement
invoice
in
queue
Time @
SSC
in
queue
+
Authorization
Time
Time @ SSC
Calendar
days
Day of
week
1 25 N 01-Apr A 155 9 2.0 5.5 6.5 5.0 21st-30th Monday
2 55 D 01-Apr B 175 13 1.2 5.6 9.5 6.5 11th-20th Wednesday
3 40 D 01-Apr C 98 10 2.3 6.3 6.3 6.0 1st-10th Friday
4 35 D 02-Apr D 125 8 2.0 4.9 5.4 5.5 21st-30th Monday
5 65 D 02-Apr B 450 15 1.5 7.2 10.0 8.0 21st-30th Monday
6 75 D 02-Apr B 350 18 2.4 8.5 12.0 8.0 21st-30th Tuesday
7 22 N 03-Apr A 176 9 2.5 6.0 7.0 4.5 21st-30th Monday
8 35 D 03-Apr A 154 8 4.0 4.6 5.6 4.0 21st-30th Tuesday
9 88 D 03-Apr B 134 20 3.0 11.0 14.0 8.0 11th-20th Wednesday
10 52 D 04-Apr C 235 10 4.0 5.6 5.6 6.7 21st-30th Monday