Find the mean of the following distribution using assumed mean method.

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Solution

Let's tabulate the given data as follows:

$\sum f_{i} \times d_{i} = 250$
$\sum f_{i} = 50$

On solving this using assumed mean method,
$Mean = a + \frac{\sum f_{i} \times d_{i}}{\sum f_{i}} Mean = 55 + \frac{250}{50} = 60$

The mean of the percentage marks scored by the entire class is 60%.

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Find the mean of the following distribution using assumed mean method.

Let's tabulate the given data as follows: ∑fi×di=250 ∑fi=50 On solving this using assumed mean method, Mean=a+∑fi×di∑fiMean =55+25050=60 The mean of the percentage marks scored by the entire class is 60%.

Let's tabulate the given data as follows:

$\sum f_{i} \times d_{i} = 250$
$\sum f_{i} = 50$

On solving this using assumed mean method,
$Mean = a + \frac{\sum f_{i} \times d_{i}}{\sum f_{i}} Mean = 55 + \frac{250}{50} = 60$

The mean of the percentage marks scored by the entire class is 60%.