1) Complete the table

Class Interval

 

Frequency (f)

Lower Class Boundaries

(lb)

Cumulative frequency (cf)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N=30

 

 



Sagot :

Answer:

1

set up a frequency distribution table.

2

find the frequency for each class interval.

3

locate the endpoint for each class interval.

4

calculate the cumulative frequency by adding the numbers in the Frequency column.

5

record all results in the table.

Determine the class boundaries by subtracting 0.5 from the lower class limit and by adding 0.5 to the upper class limit. Draw a tally mark next to each class for each value that is contained within that class. Count the tally marks to determine the frequency of each class.

Class Interval = Upper-Class limit – Lower class limit. In statistics, the data is arranged into different classes and the width of such class is called class interval.

Step-by-step explanation:hope it helps it you