Daily Practice

Higher

10th April 2026

5 questions · Higher tier · 360 questions in this band

1
The Normal Distribution
A normally distributed data set has mean 40 and standard deviation 3. Estimate the percentage of values above 43.
2
The Binomial Distribution
A biased dice lands on a six with probability 0.2. The dice is rolled 5 times. Find the probability of getting no sixes.
3
Quality Assurance and Control Charts
Explain why several consecutive sample means falling on the same side of the central line, even within the limits, can be a warning sign.
4
Spearman's Rank Correlation
Six pairs of ranks give sum of d^2 = 14. Calculate Spearman's rank correlation coefficient, giving your answer to 2 decimal places.
5
Spreadsheets and ICT (Higher)
A spreadsheet has 40 pieces of data in cells C2:C41. Give the formula to find the median.

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