To find the average number of children taking swim lessons from 1990 to 1995, you need to calculate the sum of the number of children for each year and then divide it by the number of years.
Average number of children = (Number of children in 1990 + Number of children in 1991 + Number of children in 1992 + Number of children in 1993 + Number of children in 1994 + Number of children in 1995) / 6
Based on the given options, we can calculate the average using each option:
Option 1: (250 + 308 + 385 + 450 + 1850) / 6 = 324.67 (approx.)
Option 2: (308 + 385 + 450 + 1850) / 5 = 597.6 (approx.)
Option 3: (385 + 450 + 1850) / 4 = 773.75 (approx.)
Option 4: (450 + 1850) / 3 = 766.67 (approx.)
Option 5: 1850 / 1 = 1850
Therefore, the average number of children taking swim lessons from 1990 to 1995 is approximately 324.67, which corresponds to option 1.
8. What was the average number of children taking swim lessons from 1990 to 1995?
250
308
385
450
1850
1 answer