Question

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answers and left me pls u gotta help me guys

Answer 1

Answer:

35

15+25

D

Step-by-step explanation:

Answer 2

Answer:

The class mark is also known as the class midpoint is the particular point in the middle of the class interval. it is given by , where a= lower limit and b= upper limit. Therefore , the class size and class mark of class 15-20 is 5 and 17.5.

Step-by-step explanation:

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