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A class of 35 students recorded the number of glasses of water they drink daily.
The frequency table is: 3 glasses = 8, 4 glasses = 11, 5 glasses = 9, 6 glasses = the rest.
What is the difference between the highest and the lowest frequency in the table?

Class 6Tally Marks and FrequencyData Handling
  • A8
  • B4
  • C3
  • D5

Step-by-Step Solution

6 glasses = 35 - (8 + 11 + 9) = 35 - 28 = 7. Frequencies are 8, 11, 9, 7. Highest = 11, lowest = 7, difference = 11 - 7 = 4.
Answer: B) 4

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