Find the mean deviation about the mean for the following data-WlineClass interval - 0-10 - 10-20 - 20-30 - 30-40 -40-50 -50-60 -60-70 11 HlineFrequency -8 -12 -10 -8 -3 -2 -711hline lend array

Assumed mean A = 35 [ Class amp;Mid value x amp;Frequency f amp;d_i=x 35/10 amp;f_id_i amp;|x_i x̅| amp;f_i|x_i x̅ ...

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Find the mean...

Question

Find the mean deviation about the mean for the following data.
$\begin{matrix} C l a s s i n t e r v a l & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 F r e q u e n c y & 8 & 12 & 10 & 8 & 3 & 2 & 7 \end{matrix}$

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Class interval	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$5$	$8$	$7$	$12$	$28$	$20$	$10$	$10$

Class interval	$10 - 19$	$20 - 29$	$30 - 39$	$40 - 49$	$50 - 59$	$60 - 69$	$70 - 79$
Frequency	$6$	$4$	$10$	$9$	$11$	$8$	$2$

Class Interval	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$10$	$6$	$8$	$12$	$5$	$9$

Class	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50	50 - 60	60 - 70	70 - 80
frequency	5	8	7	12	28	20	10	10