{{Information |Description =2 x 2 table used to calculate test charachteristics |Source =Microsoft Works |Author =Hannah Holt |Date = |Permission = |other_versions = }}
== Summary ==
{{Information
|Description =2 x 2 table used to calculate test charachteristics
|Source =Microsoft Works
|Author =Hannah Holt
|Date =
|Permission =
|other_versions =
}}