Unit 3 Flashcardizz Review: Investigating Data

Front

What is a nonlinear association in a scatter plot?

Back

A nonlinear association occurs when the relationship between the variables cannot be accurately represented by a straight line. The data points may form a curve or other complex pattern.

Tags

CCSS.HSS.ID.B.5

Front

What does it mean if a scatter plot shows a positive linear association?

Back

A positive linear association means that as one variable increases, the other variable also increases, and the data points can be approximated by a straight line with a positive slope.

Tags

CCSS.HSS.ID.B.5

Front

What does it mean if a scatter plot shows a negative association?

Back

A negative association means that as one variable increases, the other variable decreases, and the data points can be approximated by a straight line with a negative slope.

Tags

CCSS.HSS.ID.B.5

Front

How can you determine the best fit line for a scatter plot?

Back

The best fit line is determined by finding the line that minimizes the distance between itself and all the data points, often using methods like least squares.

Tags

CCSS.8.EE.B.5

Front

What is the significance of the slope in a linear equation?

Back

The slope indicates the rate of change between the two variables. A positive slope means an increase in one variable leads to an increase in the other, while a negative slope indicates the opposite.

Tags

CCSS.8.EE.B.5

Front

What does it mean if there is no association in a scatter plot?

Back

No association means that there is no discernible relationship between the two variables; changes in one variable do not predict changes in the other.

Tags

CCSS.HSS.ID.B.5

Front

What is the formula for a linear equation in slope-intercept form?

Back

The formula is y = mx + b, where m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

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

Back

The y-intercept is the value of y when x is zero; it represents the starting point of the line on the y-axis.

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

Front

How can you interpret the data points in a scatter plot?

Back

Data points in a scatter plot represent pairs of values for two variables, showing how they relate to each other visually.

Tags

CCSS.8.SP.A.1

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots are used to visualize the relationship between two quantitative variables, helping to identify trends, correlations, and potential outliers.

Tags

CCSS.8.SP.A.1