Question

Plzzzzzz solve thix problem

Answer 1

Answer:

Answer is 12

check the difference between these class mark and then add the same...

Answer 2

Question:

If the mean of the given data is 12, find the value of 'p'.

Answer:

Option(b): 12

Step-by-step Explanation:

(Refer to the table attached)

∑fi = 29

∑fixi = 204 + 12p

Mean = 12

Hence,

$\Longrightarrow \sf Mean = \dfrac{\Sigma fixi}{\Sigma fi} \\ \\ \\\Longrightarrow \sf 12 = \dfrac{204+12p}{29}\\ \\ \\\Longrightarrow \sf 12 \times 29=204+12p\\ \\ \\\Longrightarrow \sf 348 = 204 + 12p\\ \\ \\\Longrightarrow \sf 348 - 204 = 12p\\ \\ \\\Longrightarrow \sf 144 = 12p\\ \\ \\\Longrightarrow \sf \dfrac{144}{12} = p\\ \\ \\\Longrightarrow \sf p = 12$

Therefore, Option(b): 12 is the answer.