Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

16th March 2013

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
23 students study Spanish and 8 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 14, lower quartile 17, median 20, upper quartile 30 and maximum 40. Work out the interquartile range.
3
Fractional and Negative Indices2 marks
Write 8^-2 as a fraction.
4
Quadratic Formula3 marks
Work out the discriminant of x^2 + 4x + 11 = 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 = 5, y = 225. Work out y when x = 3.

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