Question

Find mean by step deviation method.

Weight No. of packets

200-201 13

201-202 27

202-203 18

203-204 10

204-205 1

205-206 1

Answer 1

Answer:

Approx. 201.96 (Please Find Attached)

Step-by-step explanation:

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Answer 2

Given : Weight & number of packets

To find : mean by step deviation method

Solution:

Weight           No. of packets      Mean    A=(mean - 202.5)/1   A*no of packets

200-201                       13                 200.5                -2               -26

201-202                       27                201.5                  -1              -27

202-203                       18                202.5                  0              0

203-204                       10                203.5                 1                10

204-205                       1                  204.5                  2               2

205-206                       1                205.5                  3                3

                                70                                                                -38

Mean = 202.5  +  1 * (-38)/70

= 202.5 - 0.543

= 201.957

Mean Weight of packets = 201.957

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