The McNemar test is useful for analysing studies where subjects are assessed before and
after a treatment. The response on each occasion is assumed to be categorized by a factor
with two levels. Usually level 1 represents a negative response, and level 2 a positive
response. The test assesses the consistency of the responses on the two occasions.
Data Arrangement
For McNemar's test you can supply the data in one of two ways.
Table - you can supply a two-way (2x2) table containing the counts.
You can construct a table using the Create Table button, where you create a table
from existing data or by typing the values into a new spreadsheet.
Two Factors - you can supply 2 factors; one containing
the before responses and one containing the after responses.
Display
Specifies the output to be displayed.
Test
displays the test statistic and probability value.
Table of responses
produces a table of responses.
Type of Test
Allows you to choose select either a one-sided or two-sided test.
Available Data
This lists data that can be used as data for the test. Double-click
on a name to copy it into the Data field, or type the name in directly.