Foundation Plus
22nd December 1964
- 1Probability (Higher)3 marks
A biased coin lands on heads with probability 0.25. It is thrown 500 times. How many heads would you expect?
- 2Box Plots2 marks
A box plot has minimum 11, lower quartile 17, median 22, upper quartile 31 and maximum 37. Work out the interquartile range.
- 3Standard Form2 marks
Write 0.000512 in standard form.
- 4Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = 2/x, work out y when x = -2, and write down the equation of its vertical asymptote.
- 5Compound Interest and Depreciation3 marks
£800 is invested at 2.5% compound interest per year. Work out the value after 3 years, to the nearest penny.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1964, including the monthly compilation PDF.