A student is performing a radioactivity experiment to determine the background radiation level in a laboratory. Over ten consecutive 10-second intervals, they record the following counts of beta particles using a Geiger-Müller tube:
18,12,15,21,14,19,11,17,24,13 18, \quad 12, \quad 15, \quad 21, \quad 14, \quad 19, \quad 11, \quad 17, \quad 24, \quad 13 18,12,15,21,14,19,11,17,24,13What is the median count for these measurements?
14.514.514.5
16.016.016.0
16.416.416.4
16.516.516.5
44 exam-style questions on OCR GCSE Biology Practical skills. Each one has a worked solution and a mark scheme showing where the marks go.