Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
19th December 1998
- 1Box Plots2 marks
A box plot has minimum 12, lower quartile 21, median 24, upper quartile 33 and maximum 37. Work out the interquartile range.
- 2The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 3Changing the Subject of a Formula3 marks
Make x the subject of y = 7x^2 - 7.
- 4Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 24. Work out y when x = 7.
- 5Circle Theorems2 marks
ABCD is a cyclic quadrilateral. Angle ABC is 101°. Work out angle ADC.
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