AP Stats Midterm Review

Front

What is a sample in statistics?

Back

A sample is a subset of a population used to represent the entire group in statistical analysis.

Front

Define outlier in a data set.

Back

An outlier is a data point that differs significantly from other observations in a dataset, often due to variability or measurement error.

Front

What is a negative correlation?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

How do you calculate a z-score?

Back

Z-score = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.

Front

What is categorical data?

Back

Categorical data represents characteristics or qualities that can be divided into groups, such as gender or zip code.

Front

What is the mean in statistics?

Back

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

Front

What is standard deviation?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

What is the purpose of a box plot?

Back

A box plot visually summarizes the distribution of a dataset, highlighting the median, quartiles, and potential outliers.

Front

Define population in statistics.

Back

A population is the entire group of individuals or instances about whom we hope to learn.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics (e.g., colors, names), while quantitative data represents numerical values (e.g., height, weight).