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Class 7 Frequency Tables and Tally Marks — practice questions with answers

Data Handling · 5 sample questions from the school syllabus. Try each one, then open the answer and the worked solution.

1. What number does this tally mark stand for?
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Answer: C) 5
Four upright lines with a fifth line drawn across them make one bundle, which stands for 5.
2. Weather in Mumbai over 15 days was noted (R = rainy, C = cloudy, S = sunny):
R, C, R, R, S, R, C, R, R, S, R, R, C, R, R.
On how many days was it rainy?
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Answer: A) 10
Tally the letters: R occurs on days 1, 3, 4, 6, 8, 9, 11, 12, 14, 15 → 10 days. (C = 3, S = 2; check 10 + 3 + 2 = 15.)
3. A two-way table records the favourite sport of boys and girls in Class 7. How many girls were surveyed?
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Answer: D) 23
Add the Girls column: 7 + 10 + 6 = 23. (20 is the boys' total.)
4. Here is the sentence: 'THE TIGER IS THE NATIONAL ANIMAL OF INDIA'. Count the letters in each word. How many words have more than 4 letters?
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Answer: D) 4
Word lengths: THE 3, TIGER 5, IS 2, THE 3, NATIONAL 8, ANIMAL 6, OF 2, INDIA 5. More than 4: TIGER, NATIONAL, ANIMAL, INDIA = 4.
5. Twenty students scored 2, 3, 4 or 5 in a 5-mark test. 2 students scored 2 and 4 students scored 3. The class scored 78 marks in total. How many students scored 5?
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Answer: D) 6
Let x students score 4 and y score 5. Students: x + y = 20 − 6 = 14. Marks: 4 + 12 + 4x + 5y = 78, so 4x + 5y = 62. Using x = 14 − y: 56 − 4y + 5y = 62, so y = 6 (and x = 8).
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