CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Most people show a moderate level of performance i.e. in the middle range of the distribution. Frequency distribution of IQ Scores – tends to approximate a bell-shaped curve. It is called Normal Curve where the curve does not touch the x-axis.

Detailed explanation-2: -Standardized tests establish a normal distribution of scores on a tested population in a bell-shaped pattern called the normal curve. A test is reliable when it yields consistent results.

Detailed explanation-3: -Approximately 95% of the population has IQ scores between 70 and 130. Approximately 99.7% of the population has IQ scores between 55 and 145. Only approximately 0.3% of the population has IQ scores outside of this interval (less than 55 or higher than 145).

Detailed explanation-4: -This pattern of distribution of scores is called the normal curve or normal distribution.

Detailed explanation-5: -The term “bell curve” is used to describe a graphical depiction of a normal probability distribution, whose underlying standard deviations from the mean create the curved bell shape. A standard deviation is a measurement used to quantify the variability of data dispersion, in a set of given values around the mean.