Which of the following is a simulation?

1. measuring the mean and standard deviation of measurement from a sample

2. taking a series of measurements based on multiple samples

3. some method of generating virtual measurements that look like what would be gotten from a sample

4. specifying the expected mean and standard variation of measurements for an entire population

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry. how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.