Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
21st October 2017
- 1Conditional Probability3 marks
12 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 2, lower quartile 8, median 14, upper quartile 23 and maximum 26. Work out the interquartile range.
- 3Standard Form3 marks
Work out (16 x 10^10) / (8 x 10^2). Give your answer in standard form.
- 4Quadratic Formula3 marks
Work out the discriminant of x^2 - 3x + 4 = 0 and say how many real solutions it has.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 16. Work out y when x = 3.
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