Question

The mean of 7 cm, 15 cm, 12 cm, 5 cm, h cm and 13 cm is 10 cm. Find the value of h.
Sol.
M = sum of total variates/ no of total variates

7+15+12+5+hcm+ 13/ 6 = 10
52cm + hcm/6 = 10
52cm + hcm = 6×10
52cm + hcm = 60cm
hcm = 60 - 52
hcm = 8cm
h = 8. Ans.
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Answer 1

Answer:

M = sum of total variates/ no of total variates

$⇒ \dfrac{7+15+12+5+h + 13}{6}67+15+12+5+h+13 = 10</p><p>⇒ \dfrac{52+h}{6}652+h = 10$

⇒ 52 + h = 6 × 10

⇒ 52 + h = 60

⇒ h = 60 - 52

⇒ h = 8

Hence the value of h is 8 cm.