Question

the mark of 20 students in English examination out of 100 are given below 51 40 77 64 90 50 30 68 85 45 78 63 53 65 72 42 55 39 79
arrange the data in acending order
find out the range of mark
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Answer 1

Step-by-step explanation:

Ascending order:30,39,40,42,45,50,51,53,55,63,64,68,72,77,78,79,85 ,90

Range=90-30

Range=60