I have seen the phrase that of being very commonly used, but I have never seen the phrase that from. Does the following sentence makes sense?
The number of words recalled from the list of food was compared to that from the list of cities.
The longer version of that sentence is:
The number of words recalled from the list of food was compared to the number of words recalled from the list of cities.
Essentially, the word that replaces the phrase the number of words recalled. Is this acceptable?