Stats Chapter 1-4 FINAL

Front

What type of sampling is used when individuals volunteer to give their opinion, such as calling a radio station?

Back

Voluntary Response Sample

Front

True or False: An experimental study observes individuals and measures variables of interest but does not attempt to influence the responses.

Back

False

Front

In the 5 number summary, which of the following is NOT used for data summarization? Median, Max, Mean, 1st quartile, 3rd quartile

Back

Mean

Front

What is the probability that the person picked will be a boy given they speak German?

Back

.7273

Front

The __________ measures the percent of the variation captured in the response variable that is accounted for by the least-squares regression line.

Back

Front

Define Simple Random Sampling.

Back

A sampling method where every individual has an equal chance of being selected.

Front

What is Stratified Sampling?

Back

A sampling method that involves dividing the population into subgroups and taking a sample from each.

Front

Explain Convenience Sampling.

Back

A sampling method that involves selecting individuals who are easiest to reach.

Front

What is the purpose of a control group in an experimental study?

Back

To provide a baseline for comparison against the experimental group.

Front

Define the term 'outlier' in statistics.

Back

An outlier is a data point that differs significantly from other observations.