Question

pls its urgent
answerd ones will get brainlies and 20 points​

Answer 1

Answer:

Thus median= 27.5

Step-by-step explanation:

Here n=22

n/2=22/2=11  This observation lies in the class 20-30. Then,

l (the lower limit) = 20

cf (the cumulative frequency of the class preceding (20-30) = 8

f (the frequency of the median class (20-30) = 4

h (the class size) = 10

Using the formula  Median = l +[  ( n/2-cf) / f ] xh

=20+[ (22/2-12)/4 ]x 10

=20+ [ (11-8)/4) ]x 10

=20 +3/4 x 10

=20+30/4=20+7.5

=27.5

Thus median= 27.5