Question

class internal 45-55, 55-65, 65-75, 75-85, 85-90 frequency 3, 10, 11_8, 3 direct method mean​

Answer 1

Step-by-step explanation:

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Answer 2

45 -55 = 5,55 - 65= 5, 65-75 =10, 75- 85 =10, 85- 90=5 the answer