use of the normal curve

What is the significance and use of the normal curve. How can the normal curve related to a real world situation?

In almost all cases in the social sciences, it is not feasible to collect data on the entire population in which the researcher is interested. If data from a subset or sample of the population of interest is used rather than the entire population, then repeating the data collection procedure would most likely result in a different set of numbers. A model of the distribution is used to give some consistency to the results. However if any one measure is missing from the data, we may end up with flawed results.

The alternative is a model of the frequency distribution, sometimes called a …

This solution helps explore the question: how can the normal curve related to a real world situation?