a numerically valued attribute of a model. For example, the values of Mu and Sigma.
What is Parameter
100
a sample in which each set of n elements in the population has an equal chance of selection.
What is Simple Random Sample (SRS)
100
any systematic failure of a sampling method to represent its population.
What is bias
100
a (representative) subset of a population, examined in the hope of learning about the population.
What is sample
100
the natural tendency of randomly drawn samples to differ, from one to another.
What is sampling variability
200
The entire group of individuals of instances about whom we hope to learn
What is population
200
a sampling design in which the population is divided into several sub-populations and random samples are then drawn from each "sub-population"
What is stratified random sample
200
bias introduced to a sample when individuals can choose on their own whether to participate in the sample.
What is voluntary response bias
200
a study that asks questions of a sample drawn from some population in the hope of learning something about the entire population.
What is sample survey
200
these are the three things we want to make sure to discuss when we are looking at a histogram
What is shape, center, and spread.
300
a sample that consists of the entire population.
What is census
300
a sampling design in which entire groups, are chose at random. this is usually done as a matter of convenience, practicality or cost.
What is cluster sample
300
a sampling scheme that biases the sample in a way that gives part of the population less representation then it has in the population.
What undercoverage
300
this is the best defense against bias.
What is randomization
300
a symmetric unimodal distribution that is commonly used in statistics-often referred to as a "bell-shaped curve"
What is the normal model
400
a list of individuals from whom the sample is drawn.
What is the sampling frame
400
sampling schemes that combine several sampling methods.
What is multistage sample
400
bias introduced when a large fraction of those sampled fails to respond-those who do respond are likely to not represent the population.
What is nonresponse bias
400
the number of individuals that we are able to gather statistics about
What is sample size
400
a unimodal, symmetric curve with a mean of zero and a standard deviation of 1
What is the standard normal model
500
a sample is said to be this if the statistics computed from it accurately reflect the corresponding population parameters.
What is representative
500
a sample drawn by selecting individuals systematically from a sampling frame.
What is systematic sampling
500
anything in a survey design that influences responses falls into this category.
What is response bias
500
values calculated from sampled data.
What is statistics
500
this rule applied to the normal model tells us what to expect within 1 standard deviation of the mean, 2 standard deviations of the mean and 3 standard deviations of the mean