Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
17th August 2002
- 1Conditional Probability3 marks
15 students study Spanish and 4 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 7, lower quartile 16, median 20, upper quartile 24 and maximum 33. Work out the interquartile range.
- 3Standard Form3 marks
Work out (48 x 10^10) / (6 x 10^2). Give your answer in standard form.
- 4Solving Quadratics3 marks
Solve x^2 - 8x - 9 = 0.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 80. Work out y when x = 5.
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