Consider the following frequency distribution : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} Class : 0-6 6-12 12-18 18-24 24-30 Frequency : $a $ $b$ 12 9 5 If mean = ${{309} \over {22}}$ and median = 14, then the value (a $-$ b)2 is equal to _____________.

Question

Consider the following frequency distribution :

Class :	0-6	6-12	12-18	18-24	24-30
Frequency :	$a $	$b$	12	9	5

If mean = ${{309} \over {22}}$ and median = 14, then the value (a $-$ b)² is equal to _____________.

Correct Answer

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