Daily Practice · Higher

Daily Practice - Higher

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

10th July 1999

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

1
Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 7, lower quartile 12, median 20, upper quartile 23 and maximum 26. Work out the interquartile range.
3
Reverse Percentages3 marks
A bill is £432 including VAT at 20%. Work out the amount before VAT.
4
Equation of a Line3 marks
A line has gradient -1 and passes through (5, -6). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 324. Work out y when x = 8.

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