Statistics Quest

Practice

Practise until it sticks

Choose a topic, a skill or a difficulty. Calculation exercises have new versions with fresh numbers once you have solved them, so you can practise the method rather than memorise an answer.

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Practice, difficulty 1 of 3

Building a box plot

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Put the steps for drawing a box plot by hand in order.

Put the steps in order (use the arrows)

  1. 1Find the median, Q1Q_1 and Q3Q_3, and draw the box from Q1Q_1 to Q3Q_3 with a line at the median
  2. 2Sort the data
  3. 3Draw each whisker to the most extreme data value still inside its fence
  4. 4Plot every value outside the fences as a separate point
  5. 5Compute the IQR and the fences Q1−1.5×IQRQ_1 - 1.5 \times \text{IQR} and Q3+1.5×IQRQ_3 + 1.5 \times \text{IQR}