Chapter 4 Review

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together. It can be positive, negative, or no correlation.

Front

What does a negative correlation indicate?

Back

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

Front

What does a positive correlation indicate?

Back

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

Front

What is no correlation?

Back

No correlation means there is no predictable relationship between the two variables.

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.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, indicating the trend of the data.

Front

What are independent and dependent variables?

Back

Independent variables are the variables that are changed or controlled in an experiment, while dependent variables are the variables that are measured or affected.

Front

How do you find the nth term in an arithmetic sequence?

Back

To find the nth term in an arithmetic sequence, use the formula: a_n = a_1 + (n-1)d, where a_1 is the first term and d is the common difference.

Front

What is the common difference in an arithmetic sequence?

Back

The common difference is the difference between consecutive terms in an arithmetic sequence.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.