Q: What is a experimental sample?

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A control sample is the experiment under regular conditions. An experimental sample is the experiment in which different variables are changed.

Count up the number of obseravtions made on the experimental units. That is the sample size.

experimental and control groups

Random assignment: assigning participants to experimental and control conditions by chance Vs. Random sample: a sample that fairly represents a population because each member has an equal chance of being included You decide :-D

Sampling is a method of selecting experimental units from a population so that we can make decision about the population. Sampling design is a design, or a working plan, that specifies the population frame,sample size, sample selection, and estimation method in detail. Objective of the sampling design is to know the characteristic of the population.

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A control sample is the experiment under regular conditions. An experimental sample is the experiment in which different variables are changed.

A control sample or control group is used to compare with the experimental group or sample. The control sample ideally, should be exactly the same as the experimental sample except that you don't give your experimental treatment to the control sample. Afterwards you compare the 2 samples to see if your experimental treatment had any kind of effect. The control is like a reference point.

Count up the number of obseravtions made on the experimental units. That is the sample size.

Sample Size

experimental and control groups

You will typically have an experimental parameter that will be varied as part of testing a hypothesis.

The control group.

The control group.

control

The sample size has no effect on the validity of an experiment: instead, it is the experimental procedure and integrity of the experimenters.The sample size can affect conclusions that may be drawn from an experiment. The larger the sample is, the more reliable these conclusions are.

Control Variable♪☆

A control group.