Higher Plus
15th July 1984
- 1Vectors Proof Questions3 marks
In a vector proof you find that vector PQ = 5a + 3b and vector RS = 10a + 6b. What does this show about PQ and RS?
- 2Probability Equation Questions3 marks
The probability of winning a game is 1/2. A player expects 28 wins. How many games did they play?
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 2, one 20 units wide with density 3.5. How many values in total?
- 4Bounds3 marks
x = 160 and y = 124, each correct to the nearest whole number. Work out the upper bound of x - y.
- 5The Nth Term of a Quadratic Sequence2 marks
A quadratic sequence starts 8, 14, 24, 38. Work out the second difference, and the coefficient of n^2.
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