From: A unique Levey–Jennings control chart used for internal quality control in human papillomavirus detection
HPV type
52
16
Frequency
862
573
Batches
466
Means of the positive rates
3.66%
2.38%
SD
2.80%
2.19%
Means of the first 20 batches positive rates
3.24%
2.34%
2.20%
2.29%
t-test, P-values
0.409 > 0.05
0.942 > 0.05