Organism Abundance

Biology: AQA GCSE Higher, topic 7.2.6

Organism Abundance

When discussing organism abundance, the following terms may be used:

Mean

Mean

  • The arithmetic mean is the average value of a series of numbers.
  • The mean is calculated by adding up all the values and then dividing by the number of recordings that have been made.
Mode

Mode

  • The mode is the most common value in a series.
Median

Median

  • The median is the middle value in a numerically ordered series.

Test yourself on Organism Abundance

  • What is the mode of the numbers 4, 4, 7, 9, and 12?

  • What is the mean of the numbers 6, 8, and 10?

  • What is the median of the numbers 14, 3, and 7?

  • How is the mean of a series of numbers calculated?

  • What term describes the most common value in a series of numbers?

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