Question

In mean formula, xi-a/h represents..............​

Answer 1

Answer:

Xi-a/h represents Ui

in step deviation method

Ui=∑

∑= total frequency

a = assumed mean

h= class size

Step-by-step explanation:

Answer 2

The answer is Uᵢ.

While calculating the mean using the step deviation method we calculate Uᵢ.

$U = \frac{x-a}{h}$

Here U = the mean of observation

         x = observation

         a = assumed mean

         h = height of the class

• Uᵢ is calculated for each observation xᵢ present in given data.
• It is calculated to reduce the complexity while calculating the mean for larger data.
• The assumed mean is taken according to convenience. Usually, middle observation is taken as assumed.

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