Question

The mean of the following data is
class 0-10 10-20 20-30 30-40 40-50 50-60
frequency 3 6 7 6 3 5​

Answer 1

Answer:

30

Step-by-step explanation:

(0-60)÷2=30 mean means average so

Answer 2

Answer:

class middle value x f fx

0-10 5 3 15

10-20 15 6 90

20-30 25 7 165

30-40 35 6 210

40-50 45 3 175

50-60 55 5 305

Total = 30 960

Mean x = £fx/£f

= 960/30

= 32.