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 2 of 3

Spot the reporting flaw

Not started

Match each reported statement to its main flaw.

“The average commute is 37 minutes, so most employees travel about 37 minutes.”

“The average annual bonus was 20 974 SAR.” (28.5% of employees received none)

“Mean basket value: 97.564533 SAR.”

“66% of customers paid by card.” (payment method missing for 23 baskets; base not stated)

“Delays were 21 ± 49 minutes.” (median −1 minute, long right tail)