Question

the marks scored by 20 students in a test are given below
84,57,53,89,41,57,47,64,58,44,53,72,51,78,71,62,56,68,54,42
40-50
50-60
60-70
70-80
80-90
what is the upper limit of 40-50?
what is the upper limit of 70-80?
what is the class size? ​

Answer 1

Answer:

70-80 is your answer

Step-by-step explanation:

I think its right

Answer 2

Answer:

refer to the attachment

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