Daily Practice

Foundation Plus

23rd December 1959

5 questions · 11 marks · Grades 4-6 · 128 question types in this band

1
Percentages2 marks
Work out 20% of 260.
2
Vectors2 marks
a is the column vector (-8, 4) and b is (1, -2). Work out a + b as a column vector.
3
Probability Trees3 marks
5 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 10, lower quartile 16, median 21, upper quartile 31 and maximum 34. Work out the interquartile range.
5
Error Intervals2 marks
A number y is 61 when truncated to the nearest whole number. Write down the error interval for y.

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