Question

(1)Find Median. Class-interval less than 140 140-145 145-150 150-155 155-160 160-165
Frequency 4 7 18 11 6 5​

Answer 1

Answer:

hi buddy here is ur answer

Step-by-step explanation:

Class interval. Fi. CF

140-145. 5. 5

145-150. 15. 20

150-155. 25. 45

155-160. 30 75

160-165. 15. 90

165-170. 10. 100

soln:

median=l+[n/2-cf/f] xh

n/2=100/2

=50

CF=20

f=15

l=145

h=5

145+[50-20/15]x5

145+[30/15]x5

145+2x5

145+10

155

here is the answer...