1.What is the total frequency?
a.20 b.25 c.30 d.50

2.What is the lower boundary of D3?
a.25.5 b.30.5 c.35.5 d. 40.5

3.The class interval containing Q3 calss is_______.
a.36-40 b.41-45 c.46-50 d.26-30

4.Q3 is equal to_______.
a.40.44 b.41.44 c.42.44 d.43.44

5.P20 is equal to_______.
a.30.5 b.31.5 c.32.5 d.33.5​