Use step deviation method to find the mean for the following table.

120

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240

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360

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480

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Solution

The correct option is C $360$
The formula used for step deviation method is $¯ x = A + \frac{\sum f u'}{\sum f} \times i$
$= 480 - \frac{200}{200} \times 120$
$= 480 - 120$
$¯ x = 360$
Therefore, there are $360$ receivers.

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Use step deviation method to find the mean for the following table.

The correct option is C 360The formula used for step deviation method is ¯x=A+∑fu′∑f×i=480−200200×120=480−120¯x=360Therefore, there are 360 receivers.

The correct option is C $360$
The formula used for step deviation method is $¯ x = A + \frac{\sum f u'}{\sum f} \times i$
$= 480 - \frac{200}{200} \times 120$
$= 480 - 120$
$¯ x = 360$
Therefore, there are $360$ receivers.