Stats Chapter 1-4 FINAL

Front

What is the probability of rolling a sum of EVEN number with a pair of dice?

Back

18/36

Front

True or False: Observational studies of the effect of an explanatory variable on a response variable often succeed because of confounding between the explanatory variable and one or more other variables.

Back

False

Front

A matched pairs design is a common experimental design for comparing ____ treatments.

Back

2

Front

If we calculate for the Standard Deviation, for example 4.05, and were asked to interpret the standard deviation, a buzz word(s) that would describe it would be:

Back

Typically varies by

Front

What is a tree diagram in probability?

Back

A visual representation of all possible outcomes of an event.

Front

Define 'Standard Deviation'.

Back

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

Front

What does a higher standard deviation indicate?

Back

Greater variability in the data set.

Front

What is the purpose of a control group in an experiment?

Back

To provide a baseline for comparison against the experimental group.

Front

Explain the term 'confounding variable'.

Back

A variable that influences both the dependent variable and independent variable causing a spurious association.

Front

What is the difference between descriptive and inferential statistics?

Back

Descriptive statistics summarize data, while inferential statistics make predictions or inferences about a population based on a sample.