Identify the mode for the following data $:$
Class $33$ $44$ $55$ $66$ $77$ $88$ $99$
Frequency $12$ $3$ $90$ $100$ $100$ $10$ $6$

66

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77

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Both A and B

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55

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Solution

The correct option is B Both A and B
Mode for the discrete series is the variable which has the highest frequency.
From the given distribution table, the highest frequency is $100$ which is associated with the variables $66$ and $77$
Therefore, the mode is $66$ and $77$

Suggest Corrections

Class interval	$22 - 33$	$33 - 44$	$44 - 55$	$55 - 66$	$66 - 77$	$77 - 88$	$88 - 99$
Frequency	$23$	$45$	$67$	$89$	$100$	$123$	$20$

X	1-3	3-5	5-7	7-9	9-11
frequency	2	6	4	3	5

Class	$33$	$44$	$55$	$66$	$77$	$88$	$99$
Frequency	$12$	$3$	$90$	$100$	$100$	$10$	$6$