Stats Benchmark 2 Review Part 3

Front

What is Convenience Sampling?

Back

A sampling method where the researcher selects individuals who are easiest to reach, rather than using a random selection process.

Front

If a die is rolled 300 times, how many times would you predict a roll of a 1 or a 6?

Back

100 (since there are 2 favorable outcomes out of 6 possible outcomes, the expected number is 300 * (2/6) = 100).

Front

What type of data is represented by the amount of fat (in grams) in 44 cookies?

Back

Ratio (because it has a true zero and allows for comparison of absolute magnitudes).

Front

What is the outcome variable in an experiment?

Back

The response or dependent variable (it is what is measured in the experiment).

Front

In a study investigating the relationship between the number of seeds planted and the number of fruits grown, what is the explanatory variable?

Back

The number of seeds planted (it is the variable that is manipulated to observe its effect on the response variable).

Front

Define Simple Random Sampling.

Back

A sampling method where every individual has an equal chance of being selected, ensuring that the sample is representative of the population.

Front

What is Systematic Random Sampling?

Back

A sampling method where you select every nth individual from a list or sequence after a random starting point.

Front

What is Volunteer Response Sampling?

Back

A sampling method where individuals volunteer to participate, often leading to biased results as it may attract a specific type of respondent.

Front

What is the difference between Nominal and Ordinal data?

Back

Nominal data is categorical without a specific order (e.g., colors), while Ordinal data has a defined order but no consistent difference between categories (e.g., rankings).

Front

What is an Explanatory Variable?

Back

The variable that is manipulated or controlled in an experiment to test its effects on the response variable.