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3 years ago

CAN ANYONE SOLVE THIS QUICK!

Mathematics

1 answer:

valentina_108 [34]3 years ago

6 0

Answer:

52.8

Step-by-step explanation:

We take the midpoint of the range as, x

Midpoint = (lower + upper) /2

Midpoint, x ___ Frequency, F

15 ___________ 7

45 __________27

75 __________12

105 __________4

The mean :

Σfx / Σf

= [(15*7) + (45*27) + (75*12) + (105*4)] / (7+27+12+4)

= 2460 / 50

= 52.8

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Step-by-step explanation:

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