Foundation Plus
7th March 1961
- 1Probability (Higher)3 marks
A biased coin lands on heads with probability 0.1. It is thrown 200 times. How many heads would you expect?
- 2Box Plots2 marks
A box plot has minimum 14, lower quartile 19, median 26, upper quartile 28 and maximum 31. Work out the interquartile range.
- 3Standard Form2 marks
Write 77600 in standard form.
- 4Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = 55/x, work out y when x = -5, and write down the equation of its vertical asymptote.
- 5Compound Interest and Depreciation3 marks
£1800 is invested at 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 March 1961, including the monthly compilation PDF.