stats Flashcards
What is a placebo?
A placebo is a dummy treatment given to control for the placebo effect
What is a placebo effect?
The placebo effect is when the effectiveness of a treatment is influenced by the patient’s perception of how effective they think the treatment will be, so a result might be seen even if the treatment is ineffectual
What is a control group?
When using a control group, the participants are divided into two or more groups, typically a control group and a treatment group. The treatment group receives the treatment being tested; the control group does not receive the treatment.
What is a statistic?
A statistic is a value (average, percentage, etc.) calculated using the data from a sample
What is a sample?
A sample is a smaller subset of the entire population, ideally one that is fairly representative of the whole population
Census?
A survey of an entire population is called a census.
Parameter?
A parameter is a value (average, percentage, etc.) calculated using all the data from a population
What is a population?
The population of a study is the group the collected data is intended to describe
What is a blind-study?
A blind study is one in which the participant does not know whether or not they are receiving the treatment or a placebo.
What is a double-blind study?
A double-blind study is one in which those interacting with the participants don’t know who is in the treatment group and who is in the control group.
Spanning tree?
A spanning tree is a connected graph using all vertices in which there are no circuits. In other words, there is a path from any vertex to any other vertex, but no circuits.
