Statistics Review

Front

What is the best data collection technique for observing behavior in a natural setting?

Back

Observation

Front

What sampling method involves selecting every nth individual from a population?

Back

Systematic Sampling

Front

How do you calculate the margin of error for a sample mean at a 95% confidence level?

Back

Margin of Error = z * (σ/√n), where z is the z-score for 95% confidence.

Front

What is a simple random sampling method?

Back

A sampling method where every individual has an equal chance of being selected, often done by drawing names from a hat.

Front

What is the formula for margin of error when the population standard deviation is unknown?

Back

E = t * (s/√n), where t is the t-score, s is the sample standard deviation, and n is the sample size.

Front

What is the definition of standard deviation?

Back

A measure of the amount of variation or dispersion in a set of values.

Front

What does a confidence interval represent?

Back

A range of values that is likely to contain the population parameter with a certain level of confidence.

Front

What is the purpose of conducting a census?

Back

To collect data from every member of a population.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities, while quantitative data represents numerical values.

Front

What is a sample in statistics?

Back

A subset of a population used to represent the entire group.