The marks obtained by 25 students in Maths test are given below . Draw up a frequency table of this data.
43, 44, 47, 42, 43, 43, 45, 47, 46, 42 , 44, 47, 42, 44, 41, 41, 42, 43, 47, 45, 44 42, 41, 41, 48
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Kari plans to sample 20 people of a population that contains 100 students. She wants to determine how many people wake up before 6 a.m. Which sample is the most random?
the first 20 students who arrive at school in the morning
all 20 boys on the swim team
5 students out of each of the 4 homeroom classes
the last 20 people in line for breakfast in the cafeteria
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