A. Assimilation (Time Frame: 10 minutes) Fill in the blank. 1. The number of times a particular observation appears in a data set is called its_______ 2. One way to display the spread of frequencies of the categories, values of a counting variable or class intervals is to construct a______ 3. in a class interval, the middle score is called the______ 4. The number of values that may fall in a class interval is its_____ 5._______are the values that occupy the gaps between class intervals. They can be found by subtracting 0.5 from the lower class limit and adding 0.5 to the upper class limit.