There are three children in a room, age 3, 4, and 5. What

Last updated: 7/17/2022

There are three children in a room, age 3, 4, and 5. What will happen to the mean and variance of the ages if a 4-year-old child enters the room? The mean age will stay the same, but the variance will increase. The mean age and variance will stay the same. The mean age will stay the same, but the variance will decrease. The mean age and variance will increase.