Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
26th September 2015
- 1Conditional Probability3 marks
30 students study Spanish and 11 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 4, lower quartile 7, median 17, upper quartile 22 and maximum 30. Work out the interquartile range.
- 3Fractional and Negative Indices2 marks
Write 8^-1 as a fraction.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 + 3x + 3, work out y when x = 4.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 252. Work out y when x = 2.
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