Question

Data handling
questions 1 ) Find the class mark of 30-40
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Answer 1

Answer:

9

Step-by-step explanation:

Answer 2

Hey mate, here is your answer.
Note: the word class mark is also known as average.
Now, the average of 30,40
formula for a average is: sum of observations / no.of observations
= 30+40/2
= 70/2
= 35.

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