Math, asked by jsanjan77, 10 months ago

calculate the mean of the following distribution using assumed mean method class interval 0-10/10-20/30-40/40-50 and the frequency are 5,7,15,28,8​

Answers

Answered by ShresthaTheMetalGuy
7

Answer:

29.285

Step-by-step explanation:

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Attachments:
Answered by priyanka95
3

Answer:

25.23

Step-by-step explanation:

CLASS FREQUENCY(f)     Midv(m)  deviation(d)      f×d

0-10              5                        5             -20                               -100

10-20            7                        15           -10                                -70

20-30           15                     25 = A       0                                   0

30-40           28                    35             10                                 280

40-50           8                       45            20                                 160

                   f=63                                                                f×d=270                                                                              

so, A is our assumed mean i.e. 25

i hope you know the formula of assumed mean.

using that formula,

25+ 63/270

=25.23

       

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