Math, asked by riya7777766, 11 months ago

calculate mean step deviations method​

Attachments:

Answers

Answered by baishnavi
2

Answer:

mean = 5.4

Step-by-step explanation:

C . I          fi        xi         ui             fiui

0-10         5        5         -30          -150

10-20       7        15        -20          -140

20-30      12      25        -10           -120

30-40      16      35(a)      0             0

40-50      6       45         10             60

50-60     4      55         20             80

        ∑fi = 50                       ∑fiui = -270

mean = ∑fiui

              ∑fi

= -270/50

= -5.4

but since marks cannot be negative,

mean = 5.4

hope this helps..

mark me the brainliest

Similar questions