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The weights (in kg) of 6 students are 38, 42, 45, 40, 50, 36.
If these are grouped into classes of width 5 starting at 35 (i.e. 35-40, 40-45, 45-50, 50-55), how many students fall in the class 40-45 (exclusive method)?

Class 9Collection and Presentation of DataStatistics and Probability
  • A1
  • B3
  • C4
  • D2

Step-by-Step Solution

Class 40-45 includes 40 and 42 (45 goes to next class). So 2 students: 40 and 42.
Answer: D) 2

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