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A class of students scored the following marks: 45, 55, 55, 60, 70, 70, 70, 80,

Practice Questions

Q1
A class of students scored the following marks: 45, 55, 55, 60, 70, 70, 70, 80, 90. What is the mode of the scores?
  1. 55
  2. 60
  3. 70
  4. 80

Questions & Step-by-Step Solutions

A class of students scored the following marks: 45, 55, 55, 60, 70, 70, 70, 80, 90. What is the mode of the scores?
  • Step 1: Write down all the scores: 45, 55, 55, 60, 70, 70, 70, 80, 90.
  • Step 2: Count how many times each score appears.
  • Step 3: The score 45 appears 1 time.
  • Step 4: The score 55 appears 2 times.
  • Step 5: The score 60 appears 1 time.
  • Step 6: The score 70 appears 3 times.
  • Step 7: The score 80 appears 1 time.
  • Step 8: The score 90 appears 1 time.
  • Step 9: Identify which score appears the most frequently.
  • Step 10: The score 70 appears the most (3 times), so it is the mode.
  • Mode – The mode is the value that appears most frequently in a data set.
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