Stats Review

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

68%.

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

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

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

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

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

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

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

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