A class records the blood groups of 120 students and finds the distribution: Group A — 42, Group B — 30, Group AB — 12, Group O — 36. Which statement correctly analyses this data?

Q: How do I try a free CXC Human and Social Biology question?

Just tap any of the four options on this page — no signup, no card, nothing to install. You'll see the correct answer and a full mark-scheme-style explanation within a second. Each visit shows a fresh randomly-picked question from the live CXC CSEC Human and Social Biology bank, so you can keep refreshing to try different ones before deciding whether to create a free account for daily access.

Q: Is Kramizo really free for CXC Human and Social Biology students?

Yes — completely free. Every student gets 45 questions a day on the free plan, across any board and any subject, with no card required and no trial countdown. Kramizo's optional Pro plan removes the daily cap and adds analytics, but the free plan is genuinely free forever. We make money from the small percentage of students who choose to upgrade — not from selling data or ads.

Q: Are the Human and Social Biology questions aligned to the CXC CSEC syllabus?

Every question is written against the published CXC CSEC Human and Social Biology syllabus and reviewed for accuracy before being added to the bank. We match the command words (state, describe, explain, evaluate), mark allocations, and difficulty tier you'll see on real CXC past papers. Explanations are written in the style of official examiner mark schemes so students learn exactly what marks are being awarded for.

Question

A class records the blood groups of 120 students and finds the distribution: Group A — 42, Group B — 30, Group AB — 12, Group O — 36. Which statement correctly analyses this data?

Accepted Answer

B. Blood group is discontinuous because results fall into distinct categories — The data show four distinct, non-overlapping categories with no intermediate values, which is the defining feature of discontinuous variation. The number of individuals in each group does not change the type of variation; it is the existence of discrete categories that matters.

Answer

B. Blood group is discontinuous because results fall into distinct categories

Answer

D. Blood group is discontinuous because Group O is the most common

Answer

A. Blood group is continuous because many values are recorded

Answer

C. Blood group is continuous because it is influenced by environmental factors

One real Human and Social Biology question.No signup. 30 seconds.

One real Human and Social Biology question.
No signup. 30 seconds.