Question

Find the mean of the class 0-10,10-20,20-30,30-40,40-50 whose frequency is respectively 20,24,40,36and 20​

Answer 1

Answer:

Answer:

28

Step-by-step explanation:

 C.I.                      Frequency

 0-10                          20

10-20                          24

20-30                          40

30-40                          36

40-50                          20

Modal class: 20-30

l=20

f₀=24

f₁=40

f₂=36

h=10

Mode = l + [f₁-f₀/2*f₁-f₀-f₂] h

=20+[40-24/80-24-36]*10

=20+[16/20]*10

=20+16/2

=20+8

=28

Step-by-step explanation:

Answer 2

Answer:

28

Step-by-step explanation:

C.I.                      Frequency

0-10                          20

10-20                          24

20-30                          40

30-40                          36

40-50                          20

Modal class: 20-30

l=20

f₀=24

f₁=40

f₂=36

h=10

Mode = l + [f₁-f₀/2*f₁-f₀-f₂] h

=20+[40-24/80-24-36]*10

=20+[16/20]*10

=20+16/2

=20+8

=28

Please mark me as brainliest

hope it helps