MI Score

The Mutual Information score expresses the extent to which words co-occur compared to the number of times they appear separately. MI Score is affected strongly by the frequency, low-frequency words tend to reach a high MI score which may be misleading. This is why Sketch Engine allows setting a frequency limit so that low-frequency words can be excluded from the calculation.

In most cases T-score is more useful than MI score.

see Concordance – Collocations
see Statistics in Sketch Engine

compare T-score