1. A class of students was surveyed. Here are the ages of 25 students from the class:

23, 19, 21, 27, 29, 27, 23, 22, 19, 20, 20, 21, 32, 31, 29, 27, 27, 21, 20, 22, 24, 24, 21, 20, 30.

• Make a frequency distribution table for the given data values using 4 classes.
• What is the class width? What are lower class limits? What are upper class limits?
• Create a relative frequency distribution table using the same classes as in (a)
• Create a cumulative frequency table using the same classes as in (a)
• Does this distribution seem to be a Normal Distribution?