Question

write the formula for finding class marks of class
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Answer 1

Answer:

I don't understand

que in detail

I am not spanner

Answer 2

Find the class mark of class interval 50-60.

Hint: We will first write the lower limit and upper limit of the class interval. Then, we will substitute the value in the formula, class - mark=Lower limit + upper limit2 to determine the class-mark of the class-interval.