

1. 
If the lowest class interval of the set of data {67, 90, 83, 85, 73, 80, 78, 79, 68, 71} is 6570, find the class mark of that interval. 


A. 
67.5 
B. 
2 


C. 
65 
D. 
70 


Hint 


2. 
The amount of fiber measured in grams in selected sevengrain products is 4, 10, 7, 7, 4, 1, and 1. Find the range of the data. 


A. 
9 
B. 
8 


C. 
10 
D. 
7 


Hint 


3. 
For a set of data organized in a frequency distribution, the upper and lower values in each interval are called ______. 


A. 
the class range 
B. 
class intervals 


C. 
class marks 
D. 
class limits 


Hint 


4. 
For a set of data organized in a frequency distribution, the midpoint of each class interval is called a ______. 


A. 
class range 
B. 
class mark 


C. 
class interval 
D. 
class limit 


Hint 


5. 
Find the class mark of 30–40 interval for the following data. 22, 35, 12, 37, 19, 36, 39, 13, 13, 36, 11, 37, 13, 38, 21, 37, 35, 29, 37 


A. 
36 
B. 
38 


C. 
35 
D. 
37 


Hint 

