Participants were assigned to one of three groups in order to study short-term memory with three different types of items: words, non-words, and numbers. Participants were shown a list of items that match their group type, and then were given a test to see how many items they could remember. The data is listed below. The researcher wants to know if there is a significant difference among any of the group means.
|
Words
|
Non-words
|
Numbers
|
|
8
|
5
|
6
|
|
9
|
4
|
6
|
|
7
|
5
|
5
|
|
10
|
6
|
7
|
|
9
|
3
|
5
|
|
8
|
5
|
6
|
|
7
|
4
|
7
|
|
7
|
3
|
7
|
|
>=8.13
|
>=4.38
|
>=6.13
|