Data collected that describes the quality of the data set is called data. quantitative
qualitative
mode
mean

An investigation where you compare objects to find a relationship is a(n) .
control group
descriptive investigation
comparative investigation

If the number 5 occurs with the most frequency in the data set, it is called the .
qualitative
mode
mean
median

1. Qualitative.

2. Comparative investigation.

3. Mode.

Explanation:

1. Data collected that describes the quality of the data set is called qualitative data. This data type are non-numerical in nature i.e they are categorical. Some examples are excellent, poor, gender, religion etc.

2. An investigation where you compare objects to find a relationship is a comparative investigation. For example, a researcher trying to find out which bag is heavier by determining their weight.

3. If the number 5 occurs with the most frequency in the data set, it is called the mode.

For example, given A = (1, 5, 2, 5, 1, 5 4, 5). The mode is 5 because it appeared the most i.e four (4) times.