Foundation Plus
26th November 1971
- 1Scale Drawings2 marks
A map has a scale of 1 : 10000. Two villages are 9 cm apart on the map. How far apart are they in real life, in km?
- 2Vectors2 marks
a is the column vector (-4, 4) and b is (-7, -5). Work out a + b as a column vector.
- 3Probability Trees3 marks
2 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Box Plots2 marks
A box plot has minimum 3, lower quartile 5, median 8, upper quartile 15 and maximum 17. Work out the interquartile range.
- 5Error Intervals2 marks
A number y is 21 when truncated to the nearest whole number. Write down the error interval for y.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of November 1971, including the monthly compilation PDF.