A survey is given to 30 students at the national campus to determine whether national campus students prefer that a track or baseball field be built first.
The number of siblings for the students in MS 150 Statistics Spring 2001 was given by
the following data set:
0,2,3,3,3,4,4,4,4,4,5,5,5,5,5,5,5,6,7,7,7,8,8,9,9,10,12 
Use this data for the rest of the questions. 
| Intervals | Frequency | 
|---|---|
| 0 - 3 | ____________________  | 
      
| 4 - 6 | ____________________  | 
      
| 7 - 9 | ____________________  | 
      
| 10 - 12 | ____________________  | 
      
| Sum: | ____________________  |