Daily Practice

Higher

15th April 1989

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
22 students study Spanish and 11 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Box Plots2 marks
A box plot has minimum 5, lower quartile 10, median 15, upper quartile 17 and maximum 21. Work out the interquartile range.
3
Fractional and Negative Indices3 marks
Work out 64^(2/3).
4
Quadratic Formula3 marks
Work out the discriminant of 4x^2 + 8x + 4 = 0 and say how many real solutions it has.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 72. Work out y when x = 4.

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