Question

how is the class interval decided ​

Answer 1

Answer:

Its (upper limit -lower limit)/2

Explanation:

Answer 2

Explanation:

Class interval = range ÷ number of classes. If you have 15 classes of income in the distribution of income example, work out 30 ÷ 15 = $2 billion. Often, statisticians ignore extremely high and low figures and focus on the midrange frequencies.