12/7/2022 0 Comments Another word for variable terms![]() ![]() It is customary to use x for what is called the " independent variable," and y for what is called the " dependent variable" because its value depends on the value of x. If every value of x is associated with exactly one value of y, then y is said to be a function of x. In traditional calculus, a function is defined as a relation between two terms called variables because their values vary. ![]() The designation independent/dependent is clear in this case, because if a correlation is found, it cannot be the that life span that has influenced the vitamin C intake, but an influence in the other direction is possible. The goal is to see if the independent variable of high vitamin C dosage has a correlation with the dependent variable of people's life span. The scientists will investigate if there is any statistically significant difference in the life span of the people who took the high dose and those who took the placebo (no dose). One part of the group will be given a daily high dose of vitamin C, and the remainder will be given a placebo pill (so that they are unaware of not belonging to the first group) without vitamin C. Over some period of time, scientists will control the vitamin C intake in a substantial group of people. For example concerning nutrition, the independent variable of daily vitamin C intake (how much vitamin C one consumes) can influence the dependent variable of life expectancy (the average age one attains). The independent variable is typically the variable being manipulated or changed and the dependent variable is the observed result of the independent variable being manipulated. 3.2 Alternative terminology in statistics. ![]()
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