Higher
12th December 1966
- 1Conditional Probability3 marks
11 students study Spanish and 7 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 176 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Fractional and Negative Indices2 marks
Write 7^-3 as a fraction.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 2x - 3 = 0, to 2 decimal places.
- 5Repeated Percentage Change3 marks
A price rises by 25% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1966, including the monthly compilation PDF.