What percentage of the population is typically represented in the center bulk of the Bell Curve?

The center bulk of the Bell Curve, also known as the normal distribution, typically represents approximately 68% of the population. This is a key concept in statistics concerning normal distributions where values cluster around the mean. Specifically, in a standard normal distribution, around 68% of the data points lie within one standard deviation of the mean, capturing the majority of observations. This characteristic makes the 68% figure critical for understanding how data is spread across a population, particularly in fields such as psychology and education where understanding variability and typical range is essential. The concept of the Bell Curve is foundational for interpreting standardized test scores, assessing student performance, and making educational decisions based on statistical analysis.