Mean ,medium , mode average

• There are three different types of average used in science: mean, median, and mode
• Mean:

  • Calculated by adding all values together and dividing by the total number of values
  • Most common type of average used
• Median:

  • The middle value when all data is arranged in order
  • If there are an even number of readings, the median is the mean of the two middle numbers
• Mode:

  • The value that appears most often in a set of data
• To calculate the mean, add up all the values and divide by the total number of values
• In an ecological investigation, two students placed ten quadrats in shaded and sunny areas to count dandelions in each
• The students calculated the mean number of dandelions in the shade to be 3.6 and in the sun to be 5.7
• The median for the number of dandelions in the shade is 4, and in the sun is 5.5
• The mode for the number of dandelions in the shade is 4, and in the sun is 5