Averages and range

• What does the average (mean) represent in a data set?

  It represents the central value of the data set
• How is the average (mean) calculated?

  Add all numbers and divide by the count
• What is the formula for calculating the average (mean)?

  Average = Sum of all values / Total number of values
• What is the average of the numbers 5, 7, 9, 13, and 6?

  8
• What are the steps to find the average of a set of numbers?

  Add all numbers, then divide by count
• What is the average temperature if the recorded temperatures are 18°C, 22°C, 25°C, 20°C, and 24°C?

  22°C
• What is the definition of range in a data set?

  Difference between the largest and smallest number
• What does the range indicate about a data set?

  It shows how spread out the numbers are
• What is the formula for calculating the range?

  Range = Largest number - Smallest number
• What is the range of the numbers 3, 10, 15, 8, and 20?

  17
• Why is understanding the range important in data analysis?

  It helps to understand the spread of data
• What does a small range indicate about a data set?

  Numbers are close together
• What does a large range indicate about a data set?

  There is a big difference between values