Calculate Average: Compare {4,5,10,5,1,5} vs {4,5,10,5,1}

To solve this problem, let's calculate the average for each group of numbers:

• Step 1: Calculate the average of the first group $4, 5, 10, 5, 1, 5$:
  • Sum of numbers: $4 + 5 + 10 + 5 + 1 + 5 = 30$
  • Number of elements: $6$
  • Average: $\frac{30}{6} = 5$
• Step 2: Calculate the average of the second group $4, 5, 10, 5, 1$:
  • Sum of numbers: $4 + 5 + 10 + 5 + 1 = 25$
  • Number of elements: $5$
  • Average: $\frac{25}{5} = 5$

Both groups have an average of $5$, so the correct sign to place between them is =.