Table 4 Test for swapped plates. a) Plate r is seen here to have a problem, but from the table we see that it is most certainly not a plate rotation. b) A check of the distance matrix shows the {r, q} comparison to be quite good and satisfies the criteria for a match, indicating that plates r and q have been accidentally swapped.
From: A method for detecting and correcting feature misidentification on expression microarrays
a) | A1 v B | A2 v C | A3 v D | A4 v E | ||||
|---|---|---|---|---|---|---|---|---|
Plates | R_{mm} | R'_{mm} | R_{mm} | R'_{mm} | R_{mm} | R'_{mm} | R_{mm} | R'_{mm} |
{i, i} | 1 | 82 | 1 | 48 | 1 | 107 | 1 | 76 |
{j, j} | 1 | 45 | 1 | 87 | 1 | 87 | 1 | 89 |
{k, k} | 1 | 18 | 1 | 45 | 1 | 63 | 1 | 15 |
{l, l} | 1 | 85 | 1 | 106 | 1 | 103 | 1 | 93 |
{m, m} | 1 | 30 | 1 | 49 | 1 | 53 | 1 | 37 |
{n, n} | 1 | 115 | 1 | 113 | 1 | 37 | 1 | 102 |
{o, o} | 1 | 24 | 1 | 64 | 1 | 82 | 1 | 100 |
{p, p} | 1 | 110 | 1 | 102 | 1 | 104 | 1 | 93 |
{q, q} | 1 | 118 | 1 | 111 | 1 | 110 | 1 | 91 |
{r, r} | 77 | 7 | 48 | 12 | 51 | 22 | 16 | 23 |
{s, s} | 1 | 55 | 1 | 44 | 1 | 90 | 1 | 88 |
{t, t} | 1 | 115 | 1 | 101 | 1 | 110 | 1 | 99 |
{u, u} | 1 | 118 | 1 | 93 | 1 | 74 | 1 | 95 |
{v, v} | 1 | 15 | 1 | 13 | 1 | 29 | 1 | 71 |
b) | A1 v B | A2 v C | A3 v D | A4 v E | ||||
D_{mm} | D_{mn} | D_{mm} | D_{mn} | D_{mm} | D_{mn} | D_{mm} | D_{mn} | |
MEAN | 0.19 | 0.93 | 0.25 | 0.94 | 0.28 | 0.95 | 0.2 | 0.81 |
SD | 0.14 | 0.07 | 0.19 | 0.07 | 0.17 | 0.07 | 0.16 | 0.1 |
{rq} | 0.3 | 0.26 | 0.25 | 0.34 | ||||
{rr} | 0.97 | 0.95 | 0.98 | 0.72 | ||||
P-value | 1.30E-08 | 0 | 1.10E-04 | 0 | 1.90E-05 | 0 | 5.80E-04 | 1.30E-06 |