Skip to main content
DigiTransact Mastermind
Maths•University Statistics

Descriptive Statistics & Probability

University 7 questions
AI-drafted from platform data — specialist review scheduledBy DigiTransact Mastermind editorial teamLast updated
Start practice

What descriptive statistics & probability means

This skill helps you describe data with averages and spread, then use simple chance ideas to answer short questions. It matters because you need it for clear data interpretation in later statistics work and many entry tests.

What you will practise

  • Find the mean from a small set of numbers.
  • Identify the median after ordering the data.
  • Choose the correct spread measure for a data set.
  • Use basic probability language for simple events.

Before you start

You should be comfortable with arithmetic, ordering numbers, and reading simple tables or lists. You also need to know fractions and decimals at a basic level.

Worked example

One question from this skill's own question bank, shown with its full working.

Question

The mean of the data set 2, 4, 6, 8 is

  • 5
  • 4
  • 6
  • 20
Answer: 5

Working: Mean = (2 + 4 + 6 + 8) / 4 = 20 / 4 = 5.

Common mistakes to avoid

  • Adding values correctly but forgetting to divide by the number of items for the mean.
  • Taking the middle value without first arranging the data in order.
  • Mixing up standard deviation with range or variance in spread questions.
  • Treating every simple chance statement as certain instead of using probability rules.

Curriculum and exam alignment

Tertiary foundation coursework

In university and tertiary foundation programmes, this topic usually appears early in introductory statistics work and general maths support. It links directly to later coursework and professional entrance tests that ask for data summaries and basic probability.

Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.

Related skills

Other University Statistics skills in Maths, at the same point in the course.

Other Maths topics

Counting with PicturesPicture Addition & SubtractionEarly NumeracyNumber BasicsSHS Core MathematicsUniversity Mathematics

Related study guides

Exam Guides
SAT & ACT Guide for African Students Applying to US Universities

Dreaming of a US university with a scholarship? The SAT or ACT is your gateway. This guide explains …

8 min read
Exam Preparation
How to Master WASSCE Core Mathematics: Topics, Traps and Tactics

Core Maths is compulsory and it fails more WASSCE candidates than any other paper. This guide breaks…

7 min read

Exams that assess descriptive statistics & probability

University work on this skill feeds directly into these exam papers. Each page lists the Maths topics that appear on it.

BECEBECE practice questionsListed as a related subject on the BECE practice page.WASSCEWASSCE practice questionsListed as a related subject on the WASSCE practice page.GESGES practice questionsListed as a related subject on the GES practice page.

How this page was produced

This text was drafted with AI assistance from the questions and topics already stored on the platform. A subject-specialist review is scheduled but has not yet been recorded, so we do not claim it here.

Written by
DigiTransact Mastermind editorial team
Human review
Not yet. Subject-specialist review is scheduled; this page will say so once it has happened. See which content receives human review.
Last updated

Spotted a mistake on this page? Report a content correction and we will check it against the source. You can also read our editorial policy and how we use AI and where it falls short.

All Maths skills

Practise descriptive statistics & probability

7 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.

Start practice