Q2W3 AP Statistics

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you interpret the slope in a linear regression equation?

Back

The slope represents the change in the dependent variable for each one-unit increase in the independent variable.

Front

What is the probability of rolling a specific number on a fair six-sided die?

Back

The probability of rolling a specific number (e.g., a 2) is 1 out of 6, since there are 6 equally likely outcomes.

Front

How do you calculate the percentage of a specific category in a data set?

Back

To calculate the percentage, divide the number of items in the category by the total number of items, then multiply by 100.

Front

What symbol is used to represent correlation in statistics?

Back

The symbol 'r' is used to represent the correlation coefficient.

Front

What is a linear regression model?

Back

A linear regression model is a statistical method used to model the relationship between a dependent variable and one or more independent variables using a linear equation.

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative linear relationship between two variables.

Front

What is the difference between descriptive and inferential statistics?

Back

Descriptive statistics summarize and describe the characteristics of a data set, while inferential statistics use a sample to make predictions or inferences about a population.

Front

What is the purpose of a box plot?

Back

A box plot visually represents the distribution of a data set, showing the median, quartiles, and potential outliers.