11.1
The graph of a bell shaped curve symmetric about the mean.
What is a normal distribution?
The entire group of people the surveyor wants to study.
What is a population?
An error that results in misinterpretation of the entire population.
What is bias?
Way of sampling that is chosen randomly so that each member of population has equal chance of being selected. Used to better represent whole population
What is random sampling?
The hypothesis that the treatment makes no difference.
What is Null Hypothesis?
How would you describe a graph that does not have a normal distribution and the mean is less than the median
What is skewed left?
A subset or smaller, representative group taken from a population.
What is a sample?
A model that aims to reproduce the conditions of a situation so that the simulated outcomes can predict real-world outcomes.
What is a simulation?
Population is divided into smaller groups based on similar characteristics and a sample is randomly selected from each group.
What is a stratified sample?
The difference in means from the control experiment and the treatment experiment.
What is a mean difference/experimental difference?
How would you describe a graph that does not have a normal distribution and the mean is greater than the median.
What is skewed right?
Data collected from a population.
What is a parameter?
Study of people without manipulating variables, individuals, or their environment.
What is an observational study?
A group that is under ordinary conditions and is subject to no treatments.
What is a control group?
The name of the following formula: ±1/sqr(n)
What is the Margin of Error formula?
Statistical measurement that describes exactly how many standard deviations a data point is above or below the average (mean) of a dataset.
What is a z-score?
Data collected from a sample.
What is a statistic?
Questions that might encourage a particular response, are too sensitive to answer truthfully, address more than one issue, or doesn't give enough information to provide an accurate opinion.
What are biased questions?
A harmless, unmedicated treatment that resembles actual treatment.
What is a placebo?
Both correct for points: 1. The display of data from a sample 2. The inferences based on data from a sample.
1. What is descriptive statistics? 2. What is inferential statistics?
The percentage of areas under a normal bell curve with standard deviations 1, 2, and 3
What are 68%, 95%, and 99.7%?
Claim about a characteristic of a population or sample.
What is a hypothesis?
A sample that over-represents or under-represents a population that you want information about.
What is a biased sample?
An experiment where subjects are randomly assigned to a control or a treatment group.
What is a randomized comparative experiment?
Statistical method that involves repeatedly drawing samples from an original dataset to analyze variations
What is resampling?