Daily Practice · Higher

Daily Practice - Higher

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

29th January 2015

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

1
Conditional Probability3 marks
22 students study Spanish and 12 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Histograms2 marks
A histogram class is 4 units wide and contains 12 values. Work out the frequency density.
3
The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
4
Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 2x - 8, work out y when x = -3.
5
Repeated Percentage Change3 marks
A town's population is 40000 and grows by 4% each year. Work out the population after 6 years, to the nearest whole number.

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