WASSCE Statistics & Probability Questions with Step-by-Step Solutions
Statistics and Probability is often the fastest section to score in for well-prepared students. WASSCE items focus on measures of central tendency from frequency and grouped-frequency tables, standard deviation, bar charts, pie charts, cumulative frequency curves, and simple probability with and without replacement. The SHSMathPro question bank uses real Ghanaian data sets — class scores, market sales, rainfall figures — so the interpretation practice is realistic.
What WASSCE tests in Statistics & Probability
- Mean, median and mode from raw and grouped data
- Frequency and cumulative frequency tables
- Bar charts, pie charts and histograms
- Range, variance and standard deviation
- Simple probability and sample spaces
- Mutually exclusive and independent events
- Probability with and without replacement
- Permutations and combinations basics
Sample Statistics & Probability practice questions
181 Statistics & Probability questions are currently in the SHSMathPro question bank. Answers and step-by-step solutions are shown inside the quiz.
1. A scatter graph shows points rising from bottom-left to top-right. What relationship does this show?
- A. Negative correlation
- B. No correlation
- C. Positive correlation
- D. Perfect negative correlation
SHS 3
2. In an experiment, what is the purpose of a control (non-treatment) group?
- A. To receive a double dose of the treatment
- B. To provide a comparison that does not receive the treatment
- C. To collect the data faster
- D. To make the results larger
SHS 3
3. In a study of how the amount of fertiliser affects maize yield, which is the independent variable?
- A. Maize yield
- B. Amount of fertiliser
- C. Size of the farm
- D. Weather
SHS 3
4. What is bivariate data?
- A. Data collected on two different days
- B. Data with only two values
- C. Data that has two modes
- D. Data that records two variables for each individual or item
SHS 3
5. On a scatter graph the points are spread randomly with no clear pattern. What does this suggest?
- A. There is strong positive correlation
- B. There is no correlation between the variables
- C. There is strong negative correlation
- D. One variable causes the other
SHS 3
6. Which of these is observational data rather than experimental data?
- A. Giving one class extra lessons and comparing results with another
- B. Watering some plants with fertiliser and others without
- C. Recording the number of vehicles passing a junction each hour
- D. Testing a new feeding method on half of a flock of birds
SHS 3
Statistics & Probability: common questions
- How much of WASSCE Core Maths is statistics?
- Statistics and probability typically account for a reliable block of marks in both papers, including at least one essay question on grouped data or probability.
- What is the quickest way to improve in probability?
- Practise writing the sample space before calculating. Most lost marks come from miscounting outcomes, not from the arithmetic.
Practise Statistics & Probability with timed quizzes
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