Tools, Technologies and Training for Healthcare Laboratories

Basic QC Practices

QC Calculation Problem Set - Answers

Answers for the QC Calculations Problem Set.

 

James O. Westgard, Ph.D.
March 1998

The answers are listed below.

1
199
202
199
196
199
196
2
195
200
200
203
196
205
3
201
194
197
204
207
197
4
205
204
201
195
194
200
5
205
203
198
197
199
197
6
207
195
206
205
188
198
7
191
202
199
202
200
200
8
199
202
194
207
205
204
9
204
206
192
197
203
197
10
196
198
214
197
194
206
11
197
200
200
200
207
199
12
193
189
198
202
195
202
13
193
202
207
209
208
203
14
196
205
198
204
192
194
15
197
198
197
206
201
200
16
192
194
200
192
196
199
17
198
201
191
197
200
201
18
198
205
205
201
202
198
19
201
196
197
193
211
198
20
199
200
199
198
200
195
Mean
198.30
199.80
199.60
200.25
199.85
199.45
SD
4.52
4.41
5.27
4.78
5.90
3.27
CV
2.28%
2.21%
2.64%
2.39%
2.95%
1.64%
Cum mean
 
199.1
199.2
199.5
199.6
199.5
Cum SD
 
4.47
4.71
4.72
4.95
4.70
Cum CV
 
2.25%
2.37%
2.37%
2.48%
2.35%