1. In a class of 20 students, 13 students are exactly 5 feet 6
inches tall, whereas the rest of the class is over 5 feet 6 inches.
Andrew, who is 5 feet 10 inches tall, joins the class.
Which of the following statements is true about the mean? Explain
as well.
i Mean height of the class increases ii. Mean height of the class
stays the same iii. Mean height of the class goes down iv. Cannot
tell