Hip flexor strain occurs from overuse of the muscles that help you flex your. knee or do high kicks. This injury occurs in bicyclist, athletes who jump or. run with high knee kicks, athletes like soccer players, who do forceful. kicking activities, and people who practice, and people who practice the. martial arts.
In statistics , a spurious relationship ( see also spurious correlation and spurious regression ) is a mathematical relationship in which two or more events or variables are not causally related to each other ( i.e. they are independent ) , yet it may be wrongly inferred that they are , due to either coincidence or the presence of a certain third , ...
A variable is any characteristics, number, or quantity that can be measured or counte d. A variable may also be called a data item. Age, sex, business income and expenses, country of birth, capital expenditure, class grades, eye colour and vehicle type are examples of variables.It is called a variable because the value may vary between data units in a population, and may change in value over time.ypes of variables flowchart: 1  A continuous variabl e is a numeric variable. 2  A discrete variable is a numeric variable. 3  An ordinal varia ble is a categorical variable. 4  A nominal variable is a categorical variable.