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Statistics & probability

Find the mean, median and mode of a data set, see it as a chart, and work out a two-dice probability — every count shown.

7 min read Students · Parents · Educators Video in 1 language
2:18 · narrated · captions

Set up a statistics session

  1. Open the Setup Wizard

    In the tutor lobby, choose Setup Wizard at the top (or Customize). The wizard builds a focused session in four quick steps.

  2. Pick your level — Advanced

    Build on Basics revisits foundations, Advanced (recommended) works at grade level, and Expert moves faster with harder problems. Then press Continue.

  3. Choose how you learn — Step-by-step

    Direct gets to the point, Step-by-step explains every move, In-depth adds the why behind each idea, and Guide me teaches through questions.

  4. Choose Math, then the focus area — Statistics

    Select Math. A Focus area in Math row appears (General Math, Arithmetic, Algebra, Geometry, Trigonometry, Pre-Calculus, Calculus, Statistics, Probability and more). Picking one keeps every explanation, example and practice question on that topic.

  5. Pick a buddy and start

    Choose a learning buddy — Sage is calm and methodical, a favourite for math — then press Start Session.

Mean, median and mode

Data: 4, 8, 6, 5, 3, 8Grades 6–9
  1. Sort3, 4, 5, 6, 8, 8Always sort before finding the median.
  2. Mean34 ÷ 6 ≈ 5.67Sum (34) divided by count (6).
  3. Median(5 + 6) ÷ 2 = 5.5Even count: average the two middle values.
  4. Mode88 appears most often (twice).
Answer: Mean ≈ 5.67, median 5.5, mode 8 (range 5)

  1. Enter the data

    List the numbers separated by commas.

    Try it“Find the mean, median and mode of: 4, 8, 6, 5, 3, 8”

  2. See it as a chart

    Charts make patterns — like the mode — jump out.

    Try it“Can you show this data as a chart?”

A probability question

P(two dice total 7)Grades 7–10
  1. All outcomes6 × 6 = 36Each die has 6 faces.
  2. Favourable(1,6) (2,5) (3,4) (4,3) (5,2) (6,1) = 6Every ordered pair that sums to 7.
  3. Probability6/36 = 1/6Favourable ÷ total.
Answer: 1/6 ≈ 16.7%

  1. Ask about two dice

    The tutor lists the 36 equally likely outcomes and counts the ones that work.

    Try it“If I roll two fair dice, what is the probability that the total is 7?”

Keep learning

Math topics

Calculus

Differentiate a polynomial with the power rule, find the slope at a point, graph the tangent line, then integrate — rules, meaning and pictures together.

Math topics

Geometry

Use the Pythagorean theorem to find a hypotenuse, see the tutor catch a classic area mistake, and get a labelled diagram.

Ways to learn

Exam prep

Two ways to get test-ready: a quick quiz session from the lobby, and the full Exam Prep area with exams, timed mocks, gap analysis and study plans.

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