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Confounding variables are factors that can cause problems in scientific studies by skewing results and leading to wrong conclusions. So scientists always try to isolate and account for all the possible outside influencing variables they can think of. In drug testing studies for example, subjects are screened for age, general health, sometimes gender and background and more to make them similar as possible because each of these variables could be a confounding one for the level of safety of a new drug.
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What kind of research is needed to establish a cause-and-effect relationship between two variables?
You need to set up an experimental study. The variable which is the cause should be randomly assigned and the effect variable is then observed. Other study designs can only tell you that there is a link or correlation, but not necessarily a causal relation.
What kind of relationship exists between the variables if your r value is close to plus 1?
When r is close to +1 the variables have a positive correlation between them; as the x-values increase, the corresponding y-values increase. There is also a strong linear correlation or relationship between the variables, when the value of r is close to +1.
What is non-directional research hypothesis?
A non-directional research hypothesis is a kind of hypothesis that is used in testing statistical significance. It states that there is no difference between variables.
Why you get median rhomboid glossitis?
it kind of inflamation which cause inflammation at tongue by kind of bacteria and it's congenital diseases
Why is strata called homogenous in stratified sampling?
Homogeneous refers to groups composed of parts or elements that are all of the same kind or nature. In stratified sampling, a population which is composed of diverse groupings is subdivided into two or more groups so that the diversity is decreased in the subgroups. For example, if the total population is composed of males and females, then stratification into subgroups of male and female will result in strata that are of the same kind with respect to the classification variable gender: i.e, the strata are homogeneous. Other classification variables or combinations of classification variables may be used to improve homogeneity.
What kind of problems did this cause for England?
Lots and lots.
Why does it hurt when you jump?
Depends on many variables. It can be due to excessive weight, knee problems, joint problems etc. or it can be a combination of those many variables. The best thing to do is to go to a doctor's appointment to talk about it, since they are trained professionals that are meant to help you with these kind of all around problems.
What kind of problems does dishonesty cause?
it cases loss of trust
What kind of problems does the sun cause?
skin cancer is damages you skin
How can biological weathering cause problems?
Weathering of any kind can sometimes cause problems, like erosion of topsoil. Biological weathering, where the weathering is caused by living things (plants and animals), can cause the same kinds of problems.
What kind of damage does a worm cause?
Creates problems by overloading the network as it replicates.
How did the war between France and England cause problems for American colonist?
They all became kind of gay that was the cause
What kind of problems can distribute rs cause?
drivability issues accosiated with improper spark
Can breathing carbon fiber dust cause medical problems?
Prolonged inhalation of any kind of dust will cause medical problems. Using lung protection is a very good idea.
What symptoms does a Biological exposure cause?
It really depends on what kind of exposure and what kind of organisms. A long exposure can cause more problems than a short one. Some diseases can cause severe illness with only a few organisms.
What kind of health problems does water pollution cause?
you could die or you could get sick by the polluion in the air
Why do Bella and Edward stop kissing?
cause they broke up !never knew that kind of problems BRAKING UP!!!!!!!!!!
