Unit 3: Two Variable Statistics Review

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

How can you determine if a scatter plot has a strong or weak correlation?

Back

By examining the pattern of the data points on the scatter plot.

Front

What does a positive correlation indicate in a scatter plot?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate in a scatter plot?

Back

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

Front

What is the correlation coefficient?

Back

The correlation coefficient measures the strength and direction of the linear relationship between two variables.

Front

What type of equation best fits a linear positive relationship?

Back

A linear positive relationship can be represented by a linear equation with a positive slope.

Front

What is the grand total in a survey?

Back

The grand total in a survey is the sum of all individuals surveyed, regardless of their responses.

Front

How do you calculate the average of a data set?

Back

To calculate the average, sum all the values in the data set and divide by the number of values.

Front

What is the purpose of a survey in statistics?

Back

The purpose of a survey is to collect data from a group of individuals to understand their preferences, behaviors, or opinions.

Front

What is a linear equation?

Back

A linear equation is an equation that models a linear relationship between two variables, typically in the form y = mx + b.