Daily Practice · Higher

Daily Practice - Higher

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

6th March 2010

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

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 80. Work out y when x = 3.
2
Vectors3 marks
a is the column vector (3, 1) and b is (0, 3). Work out 3a - 3b as a column vector.
3
Probability Trees3 marks
6 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 13, lower quartile 16, median 22, upper quartile 30 and maximum 35. Work out the interquartile range.
5
Bounds2 marks
A mass is 26.5 kg, correct to 1 decimal place. Write down the upper bound.

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