Significances in tables: How do you read the significance information in group comparisons?

DataLion can show significance in the "datatable" chart type. Chi-square tests or z-tests are calculated for this.

These tests are possible:

• Chi-Square Homogeneity: Chi-Square tests on basis
• Chi Square: Chi Square tests between the groups
• Z-Test: Mean comparison between the groups

 

How are the significances of the Chi Square Test and Z-Test read?

Example output in DataLion:

With the Chi Square Test and Z-Test, the significance level can be read off per cell and to which column the test refers.

• The letter (A, B, C, D,...) provides information on which comparison the test refers to (table column).
• The letter format (x)/x/X provides information about the significance level (explained in the legend in the diagram). The test is significant with 
  • (x): p < .1
  • x: p < .05
  • X: p < .01
• If, for example, there is a "b" next to a value in the table, this means that a significance level of p < .05 was determined for this value compared to the value in column B.
• Each pair comparison is displayed only once. Example: All three tables below say the same thing. However, by convention, significance is given as in the first two tables, but not as in the third example: 

	A	B	C
Item 1	(b)c

Or:

	A	B	C
Item 1		(a)	a

Instead of:

	A	B	C
Item 1	(b)c	(a)	a