Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
27th August 2007
- 1Conditional Probability3 marks
15 students study Spanish and 5 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 52 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Reverse Percentages3 marks
A bill is £936 including VAT at 20%. Work out the amount before VAT.
- 4Inequalities on Graphs3 marks
Does the point (-1, -3) satisfy y > x - 5?
- 5Repeated Percentage Change3 marks
A price rises by 10% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
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