Answer:
The description corresponds to an observational study.
Explanation:
In Observational studies, researchers observe the effect of a risk factor without changing what is exposed to it or its conditions. On the other hand, in an experimental study, researchers can introduce a change and study the effects of it.
Answer:
New Moon (also called the Dark Moon)
Waxing Crescent Moon
First Quarter Moon
Waxing Gibbous Moon
Full Moon
Waning Gibbous Moon
Last Quarter Moon
Waning Crescent Moon
Explanation:
A relationship between an independent variable and a dependent variable that exists only because the effects of a third variable have not been taken into account is referred to as a<u> third variable correlation</u>.
<u>Explanation:</u>
A confounding variable, also known as a third variable or a mediator variable, influences both the independent variable and dependent variable. Being unaware of or failing to control for confounding variables may cause the researcher to analyze the results incorrectly.
A type of confounding in which a third variable leads to a mistaken causal relationship between two others. For instance, cities with a greater number of churches have a higher crime rate.
