statistics Unit 3 review 8th grade

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 grid.

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend in the data, showing the general direction that the data points follow.

Front

How do you interpret the slope of a line in a linear equation?

Back

The slope indicates the rate of change of the dependent variable with respect to the independent variable.

Front

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

Back

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

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of the dependent variable for a given value of the independent variable by finding the corresponding point on the line.

Front

What is the significance of the x-axis and y-axis in a scatter plot?

Back

The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.

Front

What does it mean if the points in a scatter plot are closely clustered around the line of best fit?

Back

It indicates a strong correlation between the two variables, suggesting that changes in one variable are closely related to changes in the other.

Front

What is correlation in statistics?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What does a positive correlation indicate?

Back

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