The ten other children are assigned to Group 2 and taught with the memorization method. At the conclusion of training, we give the children a story to read and measure the time it takes each child. A variable is a characteristic or property that can take different values. The tail of a distribution is asymptotic if it gradually approaches the X-axis. The distributions of many variables that occur in nature have a characteristic form called the normal distribution.
Normal distributions are unimodal, symmetric, and asymptotic.
We would then know the mean of the population, m, exactly. However, this would be a prohibitively expensive task. To point-estimate is to compute a statistic and accept that computed value as an approximation of the unknown value of the parameter. Rather, we mean that it is an unbiased estimator, which means that if we take a large number of samples from the population, each of size n, half the means of those samples will be larger than the population mean and half will be smaller. The denominator of the test statistic is the standard error of the statistic that appears in the numerator.