Question

Find mean , median mode
Class 500 - 700 700-900 900 - 1800 1100-1900 1300-1500
Fi
4
3
18
2
3
VAWAR'S EVb​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

C.I. fi. xi. fixi. CF

500-700. 4. 600. 2400. 4

700-900. 3. 800. 2400. 7

900-1800. 18. 1350. 24300. 25

1100-1900. 2. 1500. 3000. 27

1300-1500. 3. 1400. 4200. 30

Mean fi = 30 , fixi = 36300

Mode l = 900 , F1 = 18 , F2 = 2 , F0 = 3 , h= 200

Median n/2 = 15 , l = 900 , CF = 7 , F = 18 , h=200

Mean = fixi/fi = 36300/30 mean = 1210

mode = l+[ F1 - F0 ÷ 2(F1) - F0 - F2 ] × h

= 900+[ 18 - 3/ 2(18) - 3 - 2 ] × 200

= 900 +[ 15 / 16 - 5 ] × 200

= 900 + [ 15 / 11 ] × 200

= 900 + ( 3000 / 11 )

= 900 + 272.73

= 1172.73

median = l+ [ n/2 - CF ÷ F ] × h

= 900 + [ 15 - 7 ÷ 18 ] × 200

= 900 + [ 8÷ 18 ] × 200

= 900 + ( 1600 ÷ 18 )

= 900 + 88.9

= 988.9