Find Number Groups with Average 7: Mean Value Selection

To find the correct group of numbers with an average of 7, follow these steps:

Let's calculate the average for each group:

• Group 1: $22, 6, 8, 4$
  Calculate the sum: $22 + 6 + 8 + 4 = 40$
  There are 4 numbers, so the average: $\frac{40}{4} = 10$
• Group 2: $6, 19, 6, 4, 0$
  Calculate the sum: $6 + 19 + 6 + 4 + 0 = 35$
  There are 5 numbers, so the average: $\frac{35}{5} = 7$
• Group 3: $7, 0, 7, 7$
  Calculate the sum: $7 + 0 + 7 + 7 = 21$
  There are 4 numbers, so the average: $\frac{21}{4} = 5.25$
• Group 4: $8, 4, 3$
  Calculate the sum: $8 + 4 + 3 = 15$
  There are 3 numbers, so the average: $\frac{15}{3} = 5$

From these calculations, Group 2 with $6, 19, 6, 4, 0$ has an average of 7.

Therefore, the correct group of numbers is $6, 19, 6, 4, 0$.