For finding the mean by using the formula-x-A-h- fiui - fi -we have ui- a-A-xi-h- b-xi-A-h-c-A-xi-h-d -hxi-A

U_i=(x_i A)/h Hence, option (b) is correct. ...

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Step-Deviation Method of Finding Mean

For finding t...

Question

For finding the mean by using the formula, $¯ x = A + h (\frac{\sum f_{i} u_{i}}{\sum f_{i}}),$ ,we have $u_{i} = ?$

$(a) \frac{(A - x_{i})}{h} (b) \frac{(x_{i} - A)}{h} (c) \frac{(A + x_{i})}{h} (d) h (x_{i} - A)$

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x = A + h (\frac{\sum f_{i} u_{i}}{\sum f_{i}})

\frac{(A - x_{i})}{h}

\frac{(x_{i} - A)}{h}

\frac{(A + x_{i})}{h}

h (x_{i} - A)

¯ x = a + h (\frac{\sum f_{i} u_{i}}{\sum f_{i}}),

u_{i}

\frac{x_{i} + a}{h}

x_{i} + a

\frac{x_{i} + a}{h}

\frac{a - x_{i}}{h}

u_{i} = \frac{x_{i} - 25}{10}, Σ f_{i} u_{i} = 20, Σ f_{i} = 100, then x

u_{i} = \frac{x_{i} - 25}{10}, \sum f_{i} u_{i} = 20

\sum f_{i} = 100

¯ ¯ ¯ x

\bar{X} = a + h (\frac{1}{N} Σ f_{i} u_{i})

u_{i}

\frac{x_{i} + a}{h}

h (x_{i} - a)

\frac{x_{i} - a}{h}

\frac{a - x_{i}}{h}

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