Foundation Plus
4th August 1972
- 1Scale Drawings2 marks
A map has a scale of 1 : 50000. Two villages are 13.5 cm apart on the map. How far apart are they in real life, in km?
- 2Vectors2 marks
a is the column vector (-6, -8) and b is (6, -3). Work out a + b as a column vector.
- 3Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 56 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Error Intervals2 marks
A number y is 38 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 August 1972, including the monthly compilation PDF.