Stats Review

Front

What is cluster sampling?

Back

A sampling technique where entire groups (clusters) are selected at once, rather than individuals.

Front

What percentage of data falls within one standard deviation of the mean in a normal distribution?

Back

68%.

Front

How do you calculate the z-score?

Back

Z-score = (X - mean) / standard deviation.

Front

What is an independent variable?

Back

The variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What are qualitative and quantitative data?

Back

Qualitative data describes qualities or characteristics, while quantitative data involves numbers and measurable forms.

Front

What is the mean in statistics?

Back

The average of a set of numbers, calculated by dividing the sum of all values by the number of values.

Front

What is a standard deviation?

Back

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

Front

What is the purpose of inferential statistics?

Back

To make predictions or inferences about a population based on a sample of data.

Front

What is a dependent variable?

Back

The variable that is measured in an experiment and is affected by the independent variable.

Front

What is the difference between descriptive and inferential statistics?

Back

Descriptive statistics summarize data, while inferential statistics use data to make predictions or generalizations.