inversely correlated), or a height increase since lying down for a significant period of time (i.e.
The height of a person can vary over the course of a day, due to factors such as a height decrease from exercise done directly before measurement (i.e.As this case shows, data taken from a particular social group may not represent a total population in some countries. According to a study in France, executives and professionals are 2.6 cm (1 in) taller, and university students are 2.55 cm (1 in) taller than the national average. Different social groups can show different mean height.Under such circumstances, the mean height may not represent the total population unless sample subjects are appropriately taken from all regions with using weighted average of the different regional groups. For instance, one survey shows there is 10.8 cm ( 4 + 1⁄ 2 in) gap between the tallest state and the shortest state in Germany. Some countries may have significant height gaps between different regions.Test subjects may have been invited instead of chosen at random, resulting in sampling bias.Generally speaking, self-reported height tends to be taller than measured height, although the overestimation of height depends on the reporting subject's height, age, gender and region. Some studies may allow subjects to self-report values.3 Estimated average height of 19-year-olds by countryĪs with any statistical data, the accuracy of such data may be questionable for various reasons:.
0 kommentar(er)
