Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
30th June 2018
- 1Conditional Probability3 marks
22 students study Spanish and 5 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Box Plots2 marks
A box plot has minimum 1, lower quartile 8, median 13, upper quartile 15 and maximum 24. Work out the interquartile range.
- 3Reverse Percentages3 marks
A bill is £768 including VAT at 20%. Work out the amount before VAT.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 4x + 10, work out y when x = -4.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 288. Work out y when x = 8.
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