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HomeCXC CSEC MathematicsStatistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles)
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Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles)
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20 CXC CSEC Mathematics questions on Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles), each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles)

Question 1 · 1 mark · Difficulty 1/3

A research station in Trinidad recorded the daily rainfall (in mm) for 80 days during the wet season. The data was organized into a cumulative frequency table. What does the cumulative frequency represent?

  1. The total number of days with rainfall above a certain value
  2. The total number of days with rainfall up to and including a certain value
  3. The average rainfall for all days in the period
  4. The difference between the highest and lowest rainfall values
Show answer & explanation
✓ Answer: BThe total number of days with rainfall up to and including a certain value
Award 1 mark for recognizing that cumulative frequency is the running total of frequencies up to and including a particular class boundary. A is incorrect because cumulative frequency counts values up to, not above, a certain point. C confuses cumulative frequency with mean. D describes the range, not cumulative frequency.
Question 2 · 1 mark · Difficulty 2/3

The table shows the cumulative frequency distribution of test scores for 100 students at a school in Barbados. Score (x) | Cumulative Frequency ≤ 20 | 8 ≤ 40 | 25 ≤ 60 | 55 ≤ 80 | 85 ≤ 100 | 100 How many students scored more than 60 marks?

  1. 45
  2. 55
  3. 85
  4. 15
Show answer & explanation
✓ Answer: A45
Award 1 mark for 45. Students scoring more than 60 = Total students - Students scoring ≤60 = 100 - 55 = 45. B incorrectly gives the cumulative frequency at 60. C gives cumulative frequency at 80. D gives the frequency in the 60-80 interval only.
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CXC CSEC Mathematics: Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) FAQ

How many CXC CSEC Mathematics questions on Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) for CXC CSEC Mathematics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Mathematics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) practice with other Mathematics topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) questions aligned to the official CXC CSEC Mathematics syllabus?
Every question is written against the published CXC CSEC Mathematics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) typically tested on CXC CSEC Mathematics papers?
Statistics: Cumulative frequency tables, curves and their interpretation (median, quartiles, percentiles) appears across multiple question types on real CXC CSEC Mathematics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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